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Office of Scientific and Technical Information
Athletic Fields and Water Conservation
E-Print Network [OSTI]
Following an 18-step procedure for performing an irrigation audit will help athletic field managers conserve water while maintaining a pleasing facility for recreational use. To perform the audit correctly, a field manager must determine the answers...
Taylor, Gene R.; White, Richard; Abernathy, Scott; Smith, David
Playing it safe: Program improves quality of athletic fields and parks
. Who knew that water conservation and athletes? safety were interconnected? Since #26;#19;#19;#21;, the Sports Athletic Field Education program (SAFE) has been evaluating athletic #18;elds and parks across Texas to determine ways to make them...;#19;#19;#21; with the help of Ron Woolley, now regional program director of Agriculture and Natural Resources for AgriLife Extension, said Dr. James McAfee, associate professor and Extension turfgrass specialist at the Texas AgriLife Research and Extension Center...
Orth, Melanie
adolescent female athletes: Topics by E-print Network
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
Mines Athletic Center 12; Site Creek Athletic Complex Marv Kay Stadium at Campbell Field Mines Athletic Center 12;Mines Master Plan Kay Stadium at Campbell Field Mines...
Sphere Light Field Rendering Zigang Wang1
Sphere Light Field Rendering Zigang Wang1 and Zhengrong Liang1,2 Departments of Radiology1 is one of the most famous image-based rendering techniques. In this paper, an improved light field in the three dimensional space. This improves the quality of the rendered images. Using the triangular
The Speed of Light as a Dilaton Field
Through dimensional analysis, eliminating the physical time, we identify the speed of light as a dilaton field. This leads to a restmass zero, spin zero gauge field which we call the speedon field. The complete Lagrangian for gravitational, electromagnetic and speedon field interactions with a charged scalar field, representing matter, is given. We then find solutions for the gravitational-electromagnetic-speedon field equations. This then gives an expression for the speed of light.
Walter Wyss
EECBG Success Story: North Carolina Playing Fields Score Brighter...
Broader source: Energy.gov (indexed) [DOE]
lights for two of the town park's athletic fields. The project is expected to reduce energy consumption at North Mecklenburg Park by 20 percent and save 1,000 per field...
Athletic Training Education Program Bachelor of Science in Athletic Training
Athletic Training Education Program Bachelor of Science in Athletic Training Department of Kinesiology Athletic training is a health care profession practiced by athletic trainers who collaborate with physicians to optimize activity and participation of patients and clients. Athletic training includes
Saldin, Dilano
Gain-assisted superluminal light propagation via incoherent pump field
We investigate the dispersion and the absorption properties of a weak probe field in a three-level Lambda-type atomic system. We use just an incoherent field for controlling the group velocity of light. It is shown that the slope of dispersion changes from positive to negative just with changing the intensity of the indirect incoherent pumping field. Gain-assisted superluminal light propagation appears in this system. No laser field is used in the pumping processes.
M. Mahmoudi; S. Worya Rabiei; L. Safari; M. Sahrai
Surface Light Field Rendering for Virtual Product Design
Surface Light Field Rendering for Virtual Product Design Jan MESETH, Gero M�?LLER, Reinhard KLEIN illumination solution including accurate materials, which is stored as an outgoing Surface Light Field (SLF-facto standard in manufacturing industries like the automotive industry. They are used, e.g., for performing
Behnke, Sven
Spectrally Enhanced Lighting Program Implementation for Energy Savings: Field Evaluation
SciTech Connect (OSTI)
This report provides results from an evaluation PNNL conducted of a spectrally enhanced lighting demonstration project. PNNL performed field measurements and occupant surveys at three office buildings in California before and after lighting retrofits were made in August and December 2005. PNNL measured the following Overhead lighting electricity demand and consumption, Light levels in the workspace, Task lighting use, and Occupant ratings of satisfaction with the lighting. Existing lighting, which varied in each building, was replaced with lamps with correlated color temperature (CCT) of 5000 Kelvin, color rendering index (CRI) of 85, of varying wattages, and lower ballast factor electronic ballasts. The demonstrations were designed to decrease lighting power loads in the three buildings by 22-50 percent, depending on the existing installed lamps and ballasts. The project designers hypothesized that this reduction in electrical loads could be achieved by the change to higher CCT lamps without decreasing occupant satisfaction with the lighting.
Gordon, Kelly L.; Sullivan, Gregory P.; Armstrong, Peter R.; Richman, Eric E.; Matzke, Brett D.
Rendering Wave Effects with Augmented Light Field
Ray�based representations can model complex light transport but are limited in modeling diffraction effects that require the simulation of wavefront propagation. This paper provides a new paradigm that has the simplicity ...
Raskar, Ramesh
Light-front chiral effective field theory
We propose a general framework to calculate the nonperturbative structure of relativistic bound state systems. The state vector of the bound state is calculated in the covariant formulation of light-front dynamics. In this scheme, the state vector is defined on the light front of general position {omega} {center_dot} x = 0, where {omega} is an arbitrary light-like four-vector. This enables a strict control of any violation of rotational invariance. The state vector is then decomposed in Fock components. Our formalism is applied to the description of the nucleon properties at low energy, in chiral perturbation theory. We also show that the use of a recently proposed regularization scheme, the so-called Taylor-Lagrange regularization scheme, is very adequate in order to treat divergences in this nonperturbative framework.
Mathiot, J.-F. [Laboratoire de Physique Corpusculaire (France)] [Laboratoire de Physique Corpusculaire (France); Tsirova, N. A., E-mail: email@example.com [Samara State University (Russian Federation)
Tachyon field inflation in the light of BICEP2
We study tachyon field inflation in the light of the Planck+WMAP+BICEP2+BAO joint data. While the minimally coupled tachyon field inflation is consistent with the Planck2013 data, it is not confirmed by the Planck+WMAP+BICEP2+BAO dataset. However, a nonminimally coupled tachyon field inflation is consistent with this joint dataset.
Kourosh Nozari; Narges Rashidi
Demonstration Assessment of Light-Emitting Diode (LED) Accent Lighting at the Field Museum in Chicago, IL
This report reviews a demonstration of light-emitting diode (LED) accent lighting compared to halogen (typical) accent lighting in a gallery of the Field Museum in Chicago, IL.
Myer, Michael; Kinzey, Bruce R.
Athletic Training Coordinator Hometown: Colorado Springs, CO
WHO WE ARE Gaby Bell Athletic Training Coordinator Hometown: Colorado Springs, CO Certifications Athletic Training Graduate Assistant Jonathan Hodapp Student Athletic Trainer Mike Carlson Student Athletic
Van Stryland, Eric
Light scattering by radiation fields: the optical medium analogy
The optical medium analogy of a radiation field generated by either an exact gravitational plane wave or an exact electromagnetic wave in the framework of general relativity is developed. The equivalent medium of the associated background field is inhomogeneous and anisotropic in the former case, whereas it is inhomogeneous but isotropic in the latter. The features of light scattering are investigated by assuming the interaction region to be sandwiched between two flat spacetime regions, where light rays propagate along straight lines. Standard tools of ordinary wave optics are used to study the deflection of photon paths due to the interaction with the radiation fields, allowing for a comparison between the optical properties of the equivalent media associated with the different background fields.
Donato Bini; Pierluigi Fortini; Andrea Geralico; Maria Haney; Antonello Ortolan
Surface light fields for 3D photography Daniel N. Wood
Surface light fields for 3D photography Daniel N. Wood A dissertation submitted in partial This is to certify that I have examined this copy of a doctoral dissertation by Daniel N. Wood and have found for 3D photography by Daniel N. Wood Chair of Supervisory Committee: Associate Professor Brian L
Washington at Seattle, University of
SS# L# NSHE# Athletic Training
SS# L# NSHE# Athletic Training Admitted Date: Date Advised: Credits Semester Grade ENG 101 identified. Number of Transfer credits, 2-year Athletic Training Specialization or KIN 245) for admission into the Athletic Training Program. Admission process
Hemmers, Oliver
Scene Reconstruction from High Spatio-Angular Resolution Light Fields Changil Kim1,2
Scene Reconstruction from High Spatio-Angular Resolution Light Fields Changil Kim1,2 Henning Zimmer Figure 1: Our method reconstructs accurate depth from light fields of complex scenes. The images on the left show a 2D slice of a 3D input light field, a so called epipolar-plane image (EPI), and two out
Zimmer, Henning
Athletic Training 2013-14 Name: ______________________________________________________________________
Curriculum Athletic Training 2013-14 Name ______________ ______________ __________________ Pre-Athletic Training F Sp ATP 280 ______________ ______________ __________________ Basic Recognition ______________ ______________ __________________ Counseling Psychology F Sp PSY 405 ______________ ______________ __________________ Athletic Training Courses
Boyce, Richard L.
Light deflection and time delay in the solar gravitational field
The second nonvanishing order of contribution to light deflection and time delay in the solar gravitational field is studied for a realistic solar model and for a wide range of metric theories of gravity. It is shown that the second-order effects arise at order (GM/c/sup 2/R)/sup 2/ identical to epsilon/sup 4/. To calculate these effects, every component of the solar metric must be known to order epsilon/sup 4/. The parametrized post-Newtonian (PPN) metric provides most of those components. However, some extension of the PPN metric is required. This extension leads to the parametrized post-linear (PPL) metric, which is used in all calculations. To study light deflection to order epsilon/sup 4/ requires that the orbits of scattered photons be known to that order. These orbits are solved for, first in the equatorial plane and then in general, and are used to determine the deflection as measured by an observer at rest with respect to the sun. In the equatorial plane there is only a radial component to this deflection. In general, there is another component orthogonal to the radial plane, but knowledge of this component is not necessary to determine the total deflection to order epsilon/sup 4/. The total second-order deflection can be as large as 300..mu.. arcsec (for deflection by Jupiter). Measurements of some second-order terms are within the astrometric capabilities of experiments proposed for the 1990's. The time delay in the round-trip travel time of a radar beam reflected from a planet is due to the variable coordinate speed of the light signal and to the bending of the beam path. The delay is calculated to order epsilon/sup 4/. It is shown that the beam-bending gives a second-order contribution as large as the present-day uncertainties in time delay experiments with the Viking spacecraft.
Richter, G.W.
Characterization of the solar light field within the ocean mesopelagic zone based on radiative transfer simulations
Characterization of the solar light field within the ocean mesopelagic zone based on radiative t The solar light field within the ocean from the sea surface to the bottom of the mesopelagic zone there is sufficient amount of solar light to support the process of photosynthesis, and below by the aphotic
Stramski, Dariusz
LBNL# 40102 Field Investigation of Duct System Performance in California Light Commercial Buildings 1 of 26
LBNL# 40102 Field Investigation of Duct System Performance in California Light Commercial Buildings 1 of 26 Field Investigation of Duct System Performance in California Light Commercial Buildings Wm performance in fifteen systems located in eight northern California buildings. Abstract Light commercial
Athletic Training Admissions Procedures Truman State University
Athletic Training Admissions Procedures Truman State University Admission to the athletic training major is competitive and selective. Students interested in majoring in athletic training must complete Athletic Training as their major area of study on the University's application for admission
Gering, Jon C.
Light-cone gauge approach to arbitrary spin fields, currents, and shadows
Totally symmetric arbitrary spin fields in AdS space, conformal fields, conformal currents, and shadow fields in flat space are studied. Light-cone formulation for such fields, currents, and shadows is obtained. Use of the Poincare parametrization of AdS space allows us to treat fields in flat and AdS spaces on equal footing. Light-cone gauge realization of relativistic symmetries for fields, currents, and shadows is also obtained. The light-cone formulation for fields is obtained by using the gauge invariant Lagrangian which is presented in terms of the modified de Donder divergence, while the light-cone formulation for currents and shadows is obtained by using gauge invariant approach to currents and shadows. This allows us to demonstrate explicitly how ladder operators entering the gauge invariant formulation of fields, currents, and shadows manifest themselves in the light-cone formulation for fields, currents, and shadows.
R. R. Metsaev
Evaluation of Alternative Field Buses for Lighting ControlApplications
The Subcontract Statement of Work consists of two major tasks. This report is the Final Report in fulfillment of the contract deliverable for Task 1. The purpose of Task 1 was to evaluate existing and emerging protocols and standards for interfacing sensors and controllers for communicating with integrated lighting control systems in commercial buildings. The detailed task description follows: Task 1. Evaluate alternative sensor/field buses. The objective of this task is to evaluate existing and emerging standards for interfacing sensors and controllers for communicating with integrated lighting control systems in commercial buildings. The protocols to be evaluated will include at least: (1) 1-Wire Net, (2) DALI, (3) MODBUS (or appropriate substitute such as EIB) and (4) ZigBee. The evaluation will include a comparative matrix for comparing the technical performance features of the different alternative systems. The performance features to be considered include: (1) directionality and network speed, (2) error control, (3) latency times, (4) allowable cable voltage drop, (5) topology, and (6) polarization. Specifically, Subcontractor will: (1) Analyze the proposed network architecture and identify potential problems that may require further research and specification. (2) Help identify and specify additional software and hardware components that may be required for the communications network to operate properly. (3) Identify areas of the architecture that can benefit from existing standards and technology and enumerate those standards and technologies. (4) Identify existing companies that may have relevant technology that can be applied to this research. (5) Help determine if new standards or technologies need to be developed.
Koch, Ed; Rubinstein, Francis
The use of computed radiography plates to determine light and radiation field coincidence
Purpose: Photo-stimulable phosphor computed radiography (CR) has characteristics that allow the output to be manipulated by both radiation and optical light. The authors have developed a method that uses these characteristics to carry out radiation field and light field coincidence quality assurance on linear accelerators.Methods: CR detectors from Kodak were used outside their cassettes to measure both radiation and light field edges from a Varian linear accelerator. The CR detector was first exposed to a radiation field and then to a slightly smaller light field. The light impinged on the detector's latent image, removing to an extent the portion exposed to the light field. The detector was then digitally scanned. A MATLAB-based algorithm was developed to automatically analyze the images and determine the edges of the light and radiation fields, the vector between the field centers, and the crosshair center. Radiographic film was also used as a control to confirm the radiation field size.Results: Analysis showed a high degree of repeatability with the proposed method. Results between the proposed method and radiographic film showed excellent agreement of the radiation field. The effect of varying monitor units and light exposure time was tested and found to be very small. Radiation and light field sizes were determined with an uncertainty of less than 1 mm, and light and crosshair centers were determined within 0.1 mm.Conclusions: A new method was developed to digitally determine the radiation and light field size using CR photo-stimulable phosphor plates. The method is quick and reproducible, allowing for the streamlined and robust assessment of light and radiation field coincidence, with no observer interpretation needed.
Kerns, James R. [Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030 and Graduate School of Biomedical Sciences, The University of Texas Health Science Center Houston, Houston, Texas 77030 (United States)] [Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030 and Graduate School of Biomedical Sciences, The University of Texas Health Science Center Houston, Houston, Texas 77030 (United States); Anand, Aman [Department of Radiation Oncology, Mayo Clinic, Scottsdale, Arizona 85259 (United States)] [Department of Radiation Oncology, Mayo Clinic, Scottsdale, Arizona 85259 (United States)
Evaluation of Alternative Field Buses for Lighting Control Applications
2003, Jose Gutierrez, Eaton Corporation March 22, 2005 PageBuses for Lighting Control Applications Eaton CorporationEaton Corporation is a global $7.3 billion diversified
LCAV-31: A Dataset for Light Field Object Recognition Alireza Ghasemi , Nelly Afonso and Martin Vetterli
LCAV-31: A Dataset for Light Field Object Recognition Alireza Ghasemi , Nelly Afonso and Martin present LCAV-31, a multi-view object recognition dataset designed specifically for benchmarking light field image analysis tasks. The principal distinctive factor of LCAV-31 compared to similar datasets
Vetterli, Martin
Light-induced gauge fields for ultracold atoms
Gauge fields are central in our modern understanding of physics at all scales. At the highest energy scales known, the microscopic universe is governed by particles interacting with each other through the exchange of gauge bosons. At the largest length scales, our universe is ruled by gravity, whose gauge structure suggests the existence of a particle - the graviton - that mediates the gravitational force. At the mesoscopic scale, solid-state systems are subjected to gauge fields of different nature: materials can be immersed in external electromagnetic fields, but they can also feature emerging gauge fields in their low-energy description. In this review, we focus on another kind of gauge field: those engineered in systems of ultracold neutral atoms. In these setups, atoms are suitably coupled to laser fields that generate effective gauge potentials in their description. Neutral atoms "feeling" laser-induced gauge potentials can potentially mimic the behavior of an electron gas subjected to a magnetic field, but also, the interaction of elementary particles with non-Abelian gauge fields. Here, we review different realized and proposed techniques for creating gauge potentials - both Abelian and non-Abelian - in atomic systems and discuss their implication in the context of quantum simulation. While most of these setups concern the realization of background and classical gauge potentials, we conclude with more exotic proposals where these synthetic fields might be made dynamical, in view of simulating interacting gauge theories with cold atoms.
N. Goldman; G. Juzeliunas; P. Ohberg; I. B. Spielman
Eyeglasses-free Display: Towards Correcting Visual Aberrations with Computational Light Field Displays
Eyeglasses-free Display: Towards Correcting Visual Aberrations with Computational Light Field of the population in some Asia countries [Wong et al. 2000] suffer from myopia. Eyeglasses have been the pri- mary
O'Brien, James F.
Diffuse Galactic Light in the Field of the Translucent High Galactic Latitude Cloud MBM32
We have conducted B, g, V, and R-band imaging in a 45x40 arcmin^2 field containing part of the high Galactic latitude translucent cloud MBM32, and correlated the intensity of diffuse optical light S_\
Ienaka, N; Matsuoka, Y; Sameshima, H; Oyabu, S; Tsujimoto, T; Peterson, B A
Linked and knotted beams of light, conservation of helicity and the flow of null electromagnetic fields
Maxwell's equations allow for some remarkable solutions consisting of pulsed beams of light which have linked and knotted field lines. The preservation of the topological structure of the field lines in these solutions has previously been ascribed to the fact that the electric and magnetic helicity, a measure of the degree of linking and knotting between field lines, are conserved. Here we show that the elegant evolution of the field is due to the stricter condition that the electric and magnetic fields be everywhere orthogonal. The field lines then satisfy a `frozen field' condition and evolve as if they were unbreakable filaments embedded in a fluid. The preservation of the orthogonality of the electric and magnetic field lines is guaranteed for null, shear-free fields such as the ones considered here by a theorem of Robinson. We calculate the flow field of a particular solution and find it to have the form of a Hopf fibration moving at the speed of light in a direction opposite to the propagation of the pulsed light beam, a familiar structure in this type of solution. The difference between smooth evolution of individual field lines and conservation of electric and magnetic helicity is illustrated by considering a further example in which the helicities are conserved, but the field lines are not everywhere orthogonal. The field line configuration at time t=0 corresponds to a nested family of torus knots but unravels upon evolution.
William T. M. Irvine
The measurement and analysis of the magnetic field of a synchrotron light source magnet
In this thesis a unique system is used to measure the magnetic field of a superconducting synchrotron light source magnet. The magnet measured is a superferric dipole C-magnet designed to produce a magnetic field up to 3 Tesla in magnitude. Its...
Graf, Udo Werner
Correlation between Field Formation, Proton Translocation, and the Light Reactions in Photosynthesis *
in Photosynthesis * W . S c h l ie p h a k e , W . J u n g e , and H. T. W itt Max-Volmer-Institut, I. Institut f�r. September 1968) Electrical field changes across the function membrane of photosynthesis have been measured. 1. Each of the two light reactions of photosynthesis sets on one half of the electrical field. 2
Junge, Wolfgang
A Test to Verify the Speed Change of Light in the Gravitational Field of the Earth
Based on the Schwarzschild solution of the Einstein equation of gravitational field, it is proved that the speed of light speed would change and isotropy of light speed would be violated in gravitational field with spherical symmetry. On the surface of the earth, the speed of light vertical to the surface is 0.2m/s less than that parallel to the surface. It is suggested to use the method of the Michelson Morley interference to verify the change of light speed and the violation of isotropy in the gravitational field of the earth. In the proposed experiment, one arm of interferometer is vertical to the earth surface while another is parallel to the surface. When two arms are turned over 90 degree, the shift of about 0.07 interference stripe would be caused which can be observed directly. So this experiment can be considered as a new verification for general relativity in the gravitational field with spherical symmetry. If the experiment shows that gravitation would change the speed of light and violate the isotropy of light speed, the result would cause great effects on foundational physics, astrophysics and cosmolo
Mei Xiaochun
athletic training students: Topics by E-print Network
department specific O'Toole, Alice J. 5 Athletic Training Education Program Bachelor of Science in Athletic Training Physics Websites Summary: Athletic Training Education Program...
E-Print Network 3.0 - athletics athletic training Sample Search...
in a twoyear rotating system, in which the existing Athletics Representative shall train the newly... by-law-10-athletics.doc 1 of 1 9222009 BY-LAW 10 ATHLETICS Part I:...
Layered 3D: tomographic image synthesis for attenuation-based light field and high dynamic range displays
We develop tomographic techniques for image synthesis on displays composed of compact volumes of light-attenuating material. Such volumetric attenuators recreate a 4D light field or high-contrast 2D image when illuminated ...
Wetzstein, Gordon
Exoplanet-Induced Chromospheric Activity: Realistic Light Curves from Solar-type Magnetic Fields
There is growing observational evidence for some kind of interaction between stars and close-in extrasolar giant planets. Shkolnik et al. reported variability in the chromospheric Ca H and K lines of HD 179949 and upsilon And that seemed to be phased with the planet's orbital period, instead of the stellar rotational period. However, the observations also indicate that the chromospheric light curves do not repeat exactly, which may be expected for a planet plowing through a variable stellar magnetic field. Using the complex solar magnetic field (modeled with the Potential Field Source Surface technique) as a guide, we simulate the shapes of light curves that would arise from planet-star interactions that are channeled along magnetic field lines. We also study the orbit-to-orbit variability of these light curves and how they vary from solar minimum (i.e., a more or less axisymmetric stretched dipole) to solar maximum (a superposition of many higher multipole moments) fields. Considering more complex magnetic fields introduces new difficulties in the interpretation of observations, but it may also lead to valuable new diagnostics of exoplanet magnetospheres.
Steven R. Cranmer; Steven H. Saar
OPTI-583: Computational Optics I: Ultrafast pulses and strong-field light-matter interactions.
OPTI-583: Computational Optics I: Ultrafast pulses and strong-field light-matter interactions. Time-power femtosecond pulses. Prerequisites: Knowledge of basic electromagnetic theory (e.g. Phys-241). While previous that govern the interaction of ultrashort pulses with var- ious media, and the Numerical methods track
Arizona, University of
TILTED LAYER-BASED MODELING FOR ENHANCED LIGHT-FIELD PROCESSING AND IMAGE BASED RENDERING James, UK {j.pearson09, marcovs, mike.brookes, email@example.com ABSTRACT Image based rendering- torealistic results. However for successful rendering, geometric pri- ors about the structure of the scene
Dragotti, Pier Luigi
Image-Based Volume Rendering with Opacity Light Fields Miriah Meyer1
Image-Based Volume Rendering with Opacity Light Fields Miriah Meyer1 Hanspeter Pfister2 Charles hardware has proven valuable for volume rendering, large datasets continue to overwhelm the capabilities of the graphics cards, reducing the inter- activity of volume rendering utilizing such hardware. We present
Meyer, Miriah
College of Health Sciences AT Athletic Training
College of Health Sciences AT Athletic Training KEY: # = new course * = course changed = course/research). (Same as HS 500, CLS 500, CNU 500, CD 500, PAS 500.) AT 660 DIRECTED STUDY IN ATHLETIC TRAINING. (1 SCIENTIFIC INQUIRY IN ATHLETIC TRAINING I. (2) Anintroductiontotheresearchprocessinathletictraining
MacAdam, Keith
Stress-induced piezoelectric field in GaN-based 450-nm light-emitting diodes
We investigated the influence of the built-in piezoelectric field induced by compressive stress on the characteristics of GaN-based 450-nm light-emitting diodes (LEDs) prepared on sapphire substrates of different thicknesses. As the sapphire substrate thickness was reduced, the compressive stress in the GaN layer was released, resulting in wafer bowing. The wafer bowing-induced mechanical stress altered the piezoelectric field, which in turn reduced the quantum confined Stark effect in the InGaN/GaN active region of the LED. The flat-band voltage was estimated by measuring the applied bias voltage that induced a 180� phase shift in the electro-reflectance (ER) spectrum. The piezoelectric field estimated by the ER spectra changed by ?110?kV/cm. The electroluminescence spectral peak wavelength was blue-shifted, and the internal quantum efficiency was improved by about 22% at a high injection current of 100?mA. The LED on the 60-?m-thick sapphire substrate exhibited the highest light output power of ?59?mW at an injection current of 100?mA, with the operating voltage unchanged.
Tawfik, Wael Z. [Department of Materials Science and Engineering, Chonnam National University, Yongbong 300 Gwangju 500-757 (Korea, Republic of); Department of Physics, Faculty of Science, Beni-Suef University, Beni-Suef 62511 (Egypt); Hyeon, Gil Yong; Lee, June Key, E-mail: firstname.lastname@example.com [Department of Materials Science and Engineering, Chonnam National University, Yongbong 300 Gwangju 500-757 (Korea, Republic of)
Phase-space representation of digital holographic and light field imaging with application to two-phase flows
In this thesis, two computational imaging techniques used for underwater research, in particular, two-phase flows measurements, are presented. The techniques under study, digital holographic imaging and light field imaging, ...
Tian, Lei, Ph. D. Massachusetts Institute of Technology
Enhancing the Field of View Limitation of Visible Light Communication-based Platoon
. In the mean time, Light Emitting Diode (LED) has become very common in automotive lighting due to its long
Boyer, Edmond
Scalar and Vector Field Constraints, Deflection of Light and Lensing in Modified Gravity (MOG)
A conformal coupling of the metric in the Jordan frame to the energy-momentum tensor, screens the scalar field gravitational coupling strength $G$ in modified gravity (MOG). The scalar field acquires a mass which depends on the local matter density: the scalar field particle is massive for the Sun and earth, where the density is high compared to low density environments in cosmology and astrophysics. Together with the screening of the vector field $\\phi_\\mu$, this guarantees that solar system tests of gravity are satisfied. The conformal metric is coupled to the electromagnetic matter field and energy-momentum tensor, screening $G$ for the Sun and the deflection of light by the Sun and the Shapiro time delay in MOG are in agreement with general relativity. For galaxies and galactic clusters the enhanced gravitational coupling constant $G$ leads to agreement with gravitational lensing without dark matter. For compact binary pulsars the screening of $G$ removes the monopole and dipole gravitational radiation modes in agreement with the binary pulsar timing data.
J. W. Moffat
Pauli-Villars regularization of field theories on the light front
Four-dimensional quantum field theories generally require regularization to be well defined. This can be done in various ways, but here we focus on Pauli-Villars (PV) regularization and apply it to nonperturbative calculations of bound states. The philosophy is to introduce enough PV fields to the Lagrangian to regulate the theory perturbatively, including preservation of symmetries, and assume that this is sufficient for the nonperturbative case. The numerical methods usually necessary for nonperturbative bound-state problems are then applied to a finite theory that has the original symmetries. The bound-state problem is formulated as a mass eigenvalue problem in terms of the light-front Hamiltonian. Applications to quantum electrodynamics are discussed.
Hiller, John R. [Department of Physics, University of Minnesota-Duluth, Duluth, Minnesota 55812 (United States)
Propagation of Light in the Field of Stationary and Radiative Gravitational Multipoles
Extremely high precision of near-future radio/optical interferometric observatories like SKA, Gaia, SIM and the unparalleled sensitivity of LIGO/LISA gravitational-wave detectors demands more deep theoretical treatment of relativistic effects in the propagation of electromagnetic signals through variable gravitational fields of the solar system, oscillating and precessing neutron stars, coalescing binary systems, exploding supernova, and colliding galaxies. Especially important for future gravitational-wave observatories is the problem of propagation of light rays in the field of multipolar gravitational waves emitted by a localized source of gravitational radiation. Present paper suggests physically-adequate and consistent mathematical solution of this problem in the first post-Minkowskian approximation of General Relativity which accounts for all time-dependent multipole moments of an isolated astronomical system.
Sergei Kopeikin; Pavel Korobkov; Alexander Polnarev
Broadwater Athletic Club & Hot Springs Space Heating Low Temperature...
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Athletic Club & Hot Springs Space Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Broadwater Athletic Club & Hot Springs Space Heating Low Temperature...
We have conducted B-, g-, V-, and R-band imaging in a 45' Multiplication-Sign 40' field containing part of the high Galactic latitude translucent cloud MBM32, and correlated the intensity of diffuse optical light S{sub {nu}}({lambda}) with that of 100 {mu}m emission S{sub {nu}}(100 {mu}m). A {chi}{sup 2} minimum analysis is applied to fit a linear function to the measured correlation and derive the slope parameter b({lambda}) = {Delta}S{sub {nu}}({lambda})/{Delta}S{sub {nu}}(100 {mu}m) of the best-fit linear function. Compiling a sample by combining our b({lambda}) and published ones, we show that the b({lambda}) strength varies from cloud to cloud by a factor of four. Finding that b({lambda}) decreases as S{sub {nu}}(100 {mu}m) increases in the sample, we suggest that a nonlinear correlation including a quadratic term of S{sub {nu}}(100 {mu}m){sup 2} should be fitted to the measured correlation. The variation of optical depth, which is A{sub V} = 0.16-2.0 in the sample, can change b({lambda}) by a factor of 2-3. There would be some contribution to the large b({lambda}) variation from the forward-scattering characteristic of dust grains which is coupled to the non-isotropic interstellar radiation field (ISRF). Models of the scattering of diffuse Galactic light (DGL) underestimate the b({lambda}) values by a factor of two. This could be reconciled by deficiency in UV photons in the ISRF or by a moderate increase in dust albedo. Our b({lambda}) spectrum favors a contribution from extended red emission (ERE) to the diffuse optical light; b({lambda}) rises from B to V faster than the models, seems to peak around 6000 A and decreases toward long wavelengths. Such a characteristic is expected from the models in which the DGL is combined with ERE.
Ienaka, N.; Kawara, K. [Institute of Astronomy, University of Tokyo, 2-21-1 Osawa, Mitaka, Tokyo 181-0015 (Japan)] [Institute of Astronomy, University of Tokyo, 2-21-1 Osawa, Mitaka, Tokyo 181-0015 (Japan); Matsuoka, Y.; Oyabu, S. [Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602 (Japan)] [Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602 (Japan); Sameshima, H. [Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 229-8501 (Japan)] [Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 229-8501 (Japan); Tsujimoto, T. [National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan)] [National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan); Peterson, B. A., E-mail: email@example.com [Research School of Astronomy and Astrophysics, The Australian National University, Weston Creek, ACT 2611 (Australia)
E-Print Network 3.0 - athletic training services Sample Search...
Mission1.atc.wpd TO PROVIDE QUALITY ATHLETIC TRAINING SERVICES TO INTERCOLLEGIATE STUDENT- ATHLETES... RHINEHART ATHLETIC TRAINING CENTER THE UNIVERSITY OF MONTANA-MISSOULA...
Measurement of fracture aperture fields using transmitted light: An evaluation of measurement errors and their influence on
Measurement of fracture aperture fields using transmitted light: An evaluation of measurement errors and their influence on simulations of flow and transport through a single fracture Russell L in fractures can be greatly enhanced through experimentation in transparent systems (analogs or replicas) where
Detwiler, Russell
Intercollegiate Athletics and Escalation of Commitment
. Brand positioning is defined as how potential buyers see the product (Ries & Trout, 1981) and how marketers create an image for a product. Roy, Greaff, and Harmon (2008) define brand positioning as the part of a brand?s identity actively communicated... but also a top academic school. College Athletics and Branding Roy, Greaff, and Harmon (2008) note that college athletics has been credited as being instrumental in shaping institutional image, the image of its students and graduates, and building...
Bouchet, Frank Adrien
Student-Athlete Development, University Enhancement, and Winning: The Institutional Logics of an NCAA Division II Athletic Program
Division II athletic department and how those logics may affect student-athletes. In order to address the purpose and research questions of this study, I conducted a qualitative case study at a private university where I interviewed thirteen members...
Nite, Kristofer Calvin
Policy on Compliance in Athletics Policy on Compliance in
Policy on Compliance in Athletics 07/1/2014 Policy on Compliance in Athletics I. Purpose and Scope conference rules, and university policies and procedures. This policy applies to student with athletics rules, policies and procedures, including NCAA rules and regulations. Other terms used herein
Sridhar, Srinivas
William and Mary Athletics Recruit Host Money Form
William and Mary Athletics Recruit Host Money Form This form must be completed when requesting reimbursement for recruit host money distributed to William and Mary student-athletes. 1. All expenses must from the William and Mary Athletics department, to be used for recruit host money during the dates
Swaddle, John
A comparison of the attitudes of Texas high school superintendents and athletic personnel regarding selected athletic concerns
A COMPARISON OF THE ATTITUDES OF TEXAS HIGH SCHOOL SUPERINTENDENTS AND ATHLETIC PERSONNEL REGARDING SELECTED ATHLETIC CONCERNS A Thesis by PATRICIA FULLAGAR YAWN Submitted to the Graduate College of Texas A&M University in partial... fulfillment of the requirements for the degree- of MASTER OF SCIENCE December 1986 Major Subject: Physical Education A COMPARISON OF THE ATTITUDES OF TEXAS HIGH SCHOOL SUPERINTENDENTS AND ATHLETIC PERSONNEL REGARDING SELECTED ATHLETIC CONCERNS A Thesis...
Yawn, Patricia Fullagar
Comparison of quantum field perturbation theory for the light front with the theory in lorentz coordinates
The relationship between the perturbation theory in light-front coordinates and Lorentz-covariant perturbation theory is investigated. A method for finding the difference between separate terms of the corresponding series without their explicit evaluation is proposed. A procedure of constructing additional counter-terms to the canonical Hamiltonian that compensate this difference at any finite order is proposed. For the Yukawa model, the light-front Hamiltonian with all of these counter-terms is obtained in a closed form. Possible application of this approach to gauge theories is discussed.
S. A. Paston; V. A. Franke
Athletic Directors? Perceptions of the Effectiveness of HBCU Division I-AA Athletic Programs
associated with revenue/funding and revenue generating determined the program?s effectiveness. Participants also commonly acknowledged that tutorials and other support services for student-athletes influenced program effectiveness. These results may be useful...
McClelland, Charles
Stereotypes of special admission students: peer perceptions of athlete and non-athlete special admit students.
STEREOTYPES OF SPECIAL ADMISSION STUDENTS: PEER PERCEPTIONS OF ATHLETE AND NON-ATHLETE SPECIAL ADMIT STUDENTS A Thesis by BRIAN R. FOWLER Submitted to the Office of Graduate Studies of Texas A&M University in partial... A Thesis by BRIAN R. FOWLER Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Approved by: Chair of Committee, George B...
Fowler, Brian R.
A general relativistic model for the light propagation in the gravitational field of the Solar System: the dynamical case
Modern astrometry is based on angular measurements at the micro-arcsecond level. At this accuracy a fully general relativistic treatment of the data reduction is required. This paper concludes a series of articles dedicated to the problem of relativistic light propagation, presenting the final microarcsecond version of a relativistic astrometric model which enable us to trace back the light path to its emitting source throughout the non-stationary gravity field of the moving bodies in the Solar System. The previous model is used as test-bed for numerical comparisons to the present one. Here we also test different versions of the computer code implementing the model at different levels of complexity to start exploring the best trade-off between numerical efficiency and the micro-arcsecond accuracy needed to be reached.
Fernando de Felice; Alberto Vecchiato; Maria Teresa Crosta; Mario G. Lattanzi; Beatrice Bucciarelli
Faculty Perceptions of Division I Male Student-Athletes: The Relationship between Student-Athlete Contact, Athletic Department Involvement, and Perceptions of Intercollegiate Athletics
, Committee Member ____________________________________ Jerry Bailey, Committee Member ____________________________________ Terrell Strayhorn, Committee Member Date Defended: __________________________ 2... Research Hypothesis 17 What is Lacking in the Literature 18 Study Significance 20 Chapter 2: Review of the Literature 24 Introduction 24 History of Faculty and College Athletics 25 Current Issues...
Tovar, Elizabeth Anne
sickle cell testing done prior to coming to URI and bring the required documentation with you so that you will also need to provide evidence that sickle cell screening has been completed. The Athletic Department will require a copy of the physical examination, results of sickle cell screening, and a copy of your insurance
Rhode Island, University of
Extended CO emission in the field of the light echo of V838 Mon
V838 Mon erupted at the beginning of 2002 becoming an extremely luminous star with L=10^6 L_sun. The outburst was followed by the spectacular light echo that revealed that the star is immersed in a diffuse and dusty medium, plausibly interstellar in nature. Low angular resolution observations in the lowest CO rotational transitions revealed a molecular emission from the direction of V838 Mon. The origin of this CO emission has not been established. In this paper we investigate the idea that the molecular emission originates in the material responsible for the optical light echo. We report on observations of 13 positions within the light echo in the two lowest rotational transitions of CO using the IRAM 30 m telescope. Emission in CO J=1-0 and J=2-1 was detected in three positions. In three other positions only weak J=1-0 lines were found. We conclude that the molecular emission from the direction of V838 Mon is extended and has a complex distribution. We identify the emission as arising from diffuse interstellar clouds and suggest that the CO-bearing gas and the echoing dust are collocated in the same interstellar cloud.
T. Kami?ski
2003: Energy performance of daylight-linked automatic lighting control systems in large atrium spaces: report on two field-monitored case studies
This paper presents the field-measured energy performance of two common types of daylight-linked lighting control systems, continuous dimming and automatic on/off installed in two existing large atrium spaces located in Canada. The daylighting performance was evaluated based on the daylight contribution to the indoor illuminance and the amount of electrical lighting displaced by daylighting via the daylight-linked lighting control systems. Measured daylighting contribution to the space indicates that significant lighting energy savings can be achieved in atrium spaces if the daylight-linked lighting control system is appropriately selected, installed and commissioned throughout its existence. Results extrapolated from measurements collected during summer and winter indicate that as installed, the continuous dimming lighting control system provides 46% annual savings in electrical lighting consumption, while the automatic on/off saves between 11-17% in lighting energy. These savings account for 68% of the lighting energy consumed during main occupancy for the continuous dimming system, and 31.5% for the automatic on/off. Operation irregularities such as a reduced dimming linearity and an incorrect adjustment of the phases of the dimming control system, as well as the inadequate location of the photocell controlling the automatic on/off lighting system, the improper maintenance of the skylight during winter and the oversizing of the lighting system reduced the energy efficiency of the lighting control systems by 30-65%.
M. R. Galasiu; Morad R. Atif; Anca D. Galasiu
Process development for the fabrication of light emitting vacuum field emission triodes
been exposed through the mask shown. c) Pattern remaining after developing negative photoresist that has been exposed through the mask shown, Fig. 13. Fig. 14. Fig. 15. Fig. 16. Fig. 17. Fig. 18. Fig. 19. Fig. 20. Illustration of SiOi film... deposition of SiOi to ensure correct film stoichiometry. c) Magnerron Sputtering. Magnetron sputtering occurs when a magnetic field is placed parallel to the cathode surface of a conventional sputtering system. The magnefic field causes primary electrons...
Williams, Roger T.
Neutrino transition magnetic moments and the solar magnetic field on the light of the Kamland evidence
We present here a recopilation of recent results about the possibility of detecting solar electron antineutrinos produced by solar core and convective magnetic fields. These antineutrinos are predicted by spin-flavor oscillations at a significant rate even if this mechanism is not the leading solution to the SNP. Using the recent Kamland results and assuming a concrete model for antineutrino production by spin-flavor precession in the convective zone based on chaotic magnetic fields,we obtain bounds on the flux of solar antineutrinos, on the average conversion neutrino-antineutrino probability and on intrinsic neutrino magnetic moment. In the most conservative case, $\\mu\\lsim 2.5\\times 10^{-11} \\mu_B$ (95% CL). When studying the effects of a core magnetic field, we find in the weak limit a scaling of the antineutrino probability with respect to the magnetic field profile in the sense that the same probability function can be reproduced by any profile with a suitable peak field value. In this way the solar electron antineutrino spectrum can be unambiguosly predicted. We use this scaling and the negative results indicated by the KamLAND experiment to obtain upper bounds on the solar electron antineutrino flux. We find that, for a wide family of magnetic field profiles in the sun interior, the antineutrino appearance probability is largely determined by the magnetic field intensity but not by its shape. Explicit limits on neutrino transition moments are also obtained consistent with the convective case. These limits are therefore largerly independent of the detailed structure of the magnetic field in the solar interior.
V. Antonelli; B. C. Chauhan; J. Pulido; E. Torrente-Lujan
Grant Lights Up Indiana Tech Athletic Center | Department of...
include features to lower operational and energy costs, such as geothermal heating and cooling unit, low-flow toilets, sinks showers and tighter insulation. "The project at the...
Stalled on the Road to the Market: Analysis of Field Experience with a Project to Promote Lighting Efficiency in India
1991. "Energy-Efficient Lighting in Brazil and India:on Energy-Efficient Lighting. Stockholm, Sweden. Katzev,with a Project to Promote Lighting Efficiency in India AJ.
Gadgil, A.J.
Interference-induced enhancement of intensity and energy of a multimode quantum optical field by a subwavelength array of coherent light sources
Recently, we have showed a mechanism that could provide a great transmission enhancement of the light waves passed through subwavelength aperture arrays in thin metal films not by the plasmon-polariton waves, but by the constructive interference of diffracted waves (beams generated by the apertures) at the detector placed in the far-field zone. We now present a quantum reformulation of the model. The Hamiltonian describing the interference-induced enhancement of the intensity and energy of a multimode quantum optical field is derived. Such a field can be produced, for instance, by a subwavelength array of coherent light sources.
S. V. Kukhlevsky
Attitudes of female athletes toward their male and female coaches
. Balazs (1), for example, used the ques- tion of the role the coach played and how he was perceived by his athletes to obtain personality characteristics information about the coaches of 25 female Olympic athletes. In that study, it is worth noting... they preferred were also included. The mother/father and good friend relationship questions were developed on the bas1s of a study of Balazs (I) using Olympic athletes. In this study, female Olympic athletes were interviewed about their feelings toward...
Newcomb, Connie Karcher
E-Print Network 3.0 - athletic trainers working Sample Search...
We work under the direct supervision of our Team Physician(s). The athlete must... . Head Athletic Trainer Tom Monagan, MS, ATC, LAT Sport Responsibility: Men's Soccer, MW...
E-Print Network 3.0 - athletes clinical results Sample Search...
As a result... & Athletic Training that partners with Volunteers in Medicine (VIM). Fellows participate in a workshop... & Athletic Training For further information...
E-Print Network 3.0 - athletes prevalence location Sample Search...
of athletic programs from the Ivy... 1 What Does Intercollegiate Athletics Do To or For Colleges and Universities? by Malcolm Getz... , and University of Adelaide, South...
Rev 8/12 SUGGESTED SEQUENCE FOR A DEGREE IN ATHLETIC TRAINING
Rev 8/12 SUGGESTED SEQUENCE FOR A DEGREE IN ATHLETIC TRAINING First Training 3 Total 16 Second: 3 Total 15 Third Semester: Apply for Athletic Training
several rea- sons: (1) incandescent lamps, the products thatin replacing an incandescent with a CFL is unmatched in anysame quantity of light as an incandescent lamp. The BELLE
Producing Light Oil from a Frozen Reservoir: Reservoir and Fluid Characterization of Umiat Field, National Petroleum Reserve, Alaska
Umiat oil field is a light oil in a shallow, frozen reservoir in the Brooks Range foothills of northern Alaska with estimated oil-in-place of over 1 billion barrels. Umiat field was discovered in the 1940�s but was never considered viable because it is shallow, in the permafrost, and far from any transportation infrastructure. The advent of modern drilling and production techniques has made Umiat and similar fields in northern Alaska attractive exploration and production targets. Since 2008 UAF has been working with Renaissance Alaska Inc. and, more recently, Linc Energy, to develop a more robust reservoir model that can be combined with rock and fluid property data to simulate potential production techniques. This work will be used to by Linc Energy as they prepare to drill up to 5 horizontal wells during the 2012-2013 drilling season. This new work identified three potential reservoir horizons within the Cretaceous Nanushuk Formation: the Upper and Lower Grandstand sands, and the overlying Ninuluk sand, with the Lower Grandstand considered the primary target. Seals are provided by thick interlayered shales. Reserve estimates for the Lower Grandstand alone range from 739 million barrels to 2437 million barrels, with an average of 1527 million bbls. Reservoir simulations predict that cold gas injection from a wagon-wheel pattern of multilateral injectors and producers located on 5 drill sites on the crest of the structure will yield 12-15% recovery, with actual recovery depending upon the injection pressure used, the actual Kv/Kh encountered, and other geologic factors. Key to understanding the flow behavior of the Umiat reservoir is determining the permeability structure of the sands. Sandstones of the Cretaceous Nanushuk Formation consist of mixed shoreface and deltaic sandstones and mudstones. A core-based study of the sedimentary facies of these sands combined with outcrop observations identified six distinct facies associations with distinctive permeability trends. The Lower Grandstand sand consists of two coarsening-upward shoreface sands sequences while the Upper Grandstand consists of a single coarsening-upward shoreface sand. Each of the shoreface sands shows a distinctive permeability profile with high horizontal permeability at the top getting progressively poorer towards the base of the sand. In contrast, deltaic sandstones in the overlying Ninuluk are more permeable at the base of the sands, with decreasing permeability towards the sand top. These trends impart a strong permeability anisotropy to the reservoir and are being incorporated into the reservoir model. These observations also suggest that horizontal wells should target the upper part of the major sands. Natural fractures may superimpose another permeability pattern on the Umiat reservoir that need to be accounted for in both the simulation and in drilling. Examination of legacy core from Umiat field indicate that fractures are present in the subsurface, but don't provide information on their orientation and density. Nearby surface exposures of folds in similar stratigraphy indicate there are at least three possible fracture sets: an early, N/S striking set that may predate folding and two sets possibly related to folding: an EW striking set of extension fractures that are parallel to the fold axes and a set of conjugate shear fractures oriented NE and NW. Analysis of fracture spacing suggests that these natural fractures are fairly widely spaced (25-59 cm depending upon the fracture set), but could provide improved reservoir permeability in horizontal legs drilled perpendicular to the open fracture set. The phase behavior of the Umiat fluid needed to be well understood in order for the reservoir simulation to be accurate. However, only a small amount of Umiat oil was available; this oil was collected in the 1940�s and was severely weathered. The composition of this �dead� Umiat fluid was characterized by gas chromatography. This analysis was then compared to theoretical Umiat composition derived using the Pedersen method with original Umiat
Hanks, Catherine
Title: Analyzing Occupancy Profiles from a Lighting Controls Field Study Authors: Francis Rubinstein, Nesrin Colak, Judith Jennings, and Danielle Neils
. The lighting energy usage in each zone was recorded automatically every 15 minutes. Using this data, we were of the occupancy sensor to reduce lighting energy usage. In selecting data for analysis, we chose to examine only-4], only one US study [5] examines the occupancy patterns of building occupants. Occupancy profiles allow
Page 1 of 8 Dear Dartmouth Student-Athlete,
physical, all NCAA Division I student-athletes must: be tested for sickle cell trait, provide that it is useful for you to know whether or not you have the sickle cell trait. Many newborns in the United States
Myers, Lawrence C.
Academic programs and services that affect student athlete success
ACADEMIC PROGRAMS AND SERVICES THAT AFFECT STUDENT ATHLETE SUCCESS A Thesis by CHERYL REBECCA RODE Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE May 2008 Major Subject: Kinesiology ACADEMIC PROGRAMS AND SERVICES THAT AFFECT STUDENT ATHLETE SUCCESS A Thesis by CHERYL REBECCA RODE Submitted to the Office of Graduate Studies of Texas A&M University...
Rode, Cheryl Rebecca
All-optical control in metal nanocomposites due to a reversible transition between the local-field-enhancement and a local-field-depression upon irradiation by ultrashort control-pulses of light
We theoretically study on non-perturbative effective nonlinear responses of metal nanocomposites based on the intrinsic third-order nonlinear response of metal nanoparticles. The large intrinsic third-order nonlinear susceptibility of metal nanoparticles and an irradiation by ultrashort control pulse of light with a sufficiently high peak intensity and moderate fluence can induce a local-field-depression and a saturated plasmon-bleaching in metal nanoparticles. If the control pulse is on, the metal nanocomposites can behave like a dielectric due to the local-field-depression, while if the control pulse is off, the metal nanocomposites can behave like a metal showing a high absorption due to the local-field-enhancement at the plasmon-resonance. This phenomenon can be applied to an ultrafast and remote control of light in metal nanocomposites.
Im, Song-Jin
The Post-Soviet Development of Elite-Level Athletics in Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan and Uzbekistan
athletes/nation=kazakhstan/index.html. � �Browse�Olympic�Committee,�Republic�of�Kazakhstan. ��Accessed�October�17,�Browse�Olympic�Athletes:��Kazakhstan;�NBC�Olympics. ��
Silecky, Matej
Monte Carlo Studies of the Radiation Fields in the Linac Coherent Light Source Undulators and of the Corresponding Signals in the Cerenkov Beam Loss Monitors
In 2009 the Linac Coherent Light Source (LCLS) at the SLAC National Accelerator Center started free electron laser (FEL) operation. In order to continue to produce the bright and short-pulsed x-ray laser demanded by FEL scientists, this pioneer hard x-ray FEL requires a perfectly tailored magnetic field at the undulators, so that the photons generated at the electron wiggling path interact at the right phase with the electron beam. In such a precise system, small (>0.01%) radiation-induced alterations of the magnetic field in the permanent magnets could affect FEL performance. This paper describes the simulation studies of radiation fields in permanent magnets and the expected signal in the detectors. The transport of particles from the radiation sources (i.e. diagnostic insert) to the undulator magnets and to the beam loss monitors (BLM) was simulated with the intra nuclear cascade codes FLUKA and MARS15. In order to accurately reproduce the optics of LCLS, lattice capabilities and magnetic fields were enabled in FLUKA and betatron oscillations were validated against reference data. All electron events entering the BLMs were printed in data files. The paper also introduces the Radioactive Ion Beam Optimizer (RIBO) Monte Carlo 3-D code, which was used to read from the event files, to compute Cerenkov production and then to simulate the optical coupling of the BLM detectors, accounting for the transmission of light through the quartz.
Santana Leitner, Mario
Experimental verification of effects of barrier dopings on the internal electric fields and the band structure in InGaN/GaN light emitting diodes
We experimentally clarify the effects of barrier dopings on the polarization induced electric fields and the band structure in InGaN/GaN blue light emitting diodes. Both effects were independently verified by using electric field modulated reflectance and capacitance-voltage measurement. It is shown that the Si barrier doping does reduce the polarization induced electric field in the quantum wells. But the benefit of Si-doping is nullified by modification of the band structure and depletion process. With increased number of doped barriers, smaller number of quantum wells remains in the depletion region at the onset of the diffusion process, which can reduce the effective active volume and enhance the electron overflow.
Song, Jung-Hoon; Kim, Tae-Soo; Park, Ki-Nam; Lee, Jin-Gyu [Department of Physics, Kongju National University, Kongju, Chungnam 314-701 (Korea, Republic of); Hong, Soon-Ku, E-mail: email@example.com [Department of Advanced Materials Engineering, Chungnam National University, Daejeon 305-764 (Korea, Republic of); Cho, Sung-Royng; Lee, Seogwoo; Whan Cho, Meoung [Wasvesquare Co., Inc., Yongin, Gyeonggi 449-863 (Korea, Republic of)
Effects of intermittent entrainment of air bubbles by breaking wind waves on ocean reflectance and underwater light field
Effects of intermittent entrainment of air bubbles by breaking wind waves on ocean reflectance, 2000]. The intermittent nature of air entrainment by breaking waves manifests itself as dramatic, Polish Academy of Sciences, Sopot, Poland Abstract. Light-scattering properties of air bubbles suspended
Microtoroid cavity QED with fiber overcoupling and strong atom-field coupling: a single-atom quantum switch for coherent light fields
We propose a scheme for single-atom, quantum control of the direction of propagation of a coherent field incident, via a tapered fiber, upon a microtoroidal whispering-gallery-mode (WGM) resonator. The scheme involves overcoupling of the fiber-taper to the resonator and strong coupling of an atom to the evanescent field of the WGM, i.e., an atom-field coupling that exceeds the total WGM linewidth. In contrast to previous, related schemes that operate in the bad-cavity regime, the proposed scheme can operate effectively with much stronger incident fields, while also preserving their coherent nature. It can also serve to prepare an entangled state of the atom and coherent optical pulses propagating in opposite directions along the fiber. We evaluate the fidelity of preparation of such a state taking into account absorption and atomic spontaneous emission and demonstrate that high fidelities should be possible with realistic parameters.
Scott Parkins; Takao Aoki
Sex, health, and athletes Recent policy introduced by the International Olympic Committee to regulate hyperandrogenism in
and at least one government, India, has already complied, creating a policy that applies to women athletesSex, health, and athletes Recent policy introduced by the International Olympic Committee introduced policies requiring medical investigation of women athletes known or suspected to have
Improved performance of HgCdTe infrared detector focal plane arrays by modulating light field based on photonic crystal structure
An HgCdTe long-wavelength infrared focal plane array photodetector is proposed by modulating light distributions based on the photonic crystal. It is shown that a promising prospect of improving performance is better light harvest and dark current limitation. To optimize the photon field distributions of the HgCdTe-based photonic crystal structure, a numerical method is built by combining the finite-element modeling and the finite-difference time-domain simulation. The optical and electrical characteristics of designed HgCdTe mid-wavelength and long-wavelength photon-trapping infrared detector focal plane arrays are obtained numerically. The results indicate that the photon crystal structure, which is entirely compatible with the large infrared focal plane arrays, can significantly reduce the dark current without degrading the quantum efficiency compared to the regular mesa or planar structure.
Liang, Jian; Hu, Weida, E-mail: firstname.lastname@example.com; Ye, Zhenhua; Li, Zhifeng; Chen, Xiaoshuang, E-mail: firstname.lastname@example.com; Lu, Wei [National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai 200083 (China); Liao, Lei [Department of Physics and Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, Wuhan University, Wuhan 430072 (China)
Large-field high-contrast hard x-ray Zernike phase-contrast nano-imaging beamline at Pohang Light Source
We developed an off-axis-illuminated zone-plate-based hard x-ray Zernike phase-contrast microscope beamline at Pohang Light Source. Owing to condenser optics-free and off-axis illumination, a large field of view was achieved. The pinhole-type Zernike phase plate affords high-contrast images of a cell with minimal artifacts such as the shade-off and halo effects. The setup, including the optics and the alignment, is simple and easy, and allows faster and easier imaging of large bio-samples.
Lim, Jun; Huang, Jung Yun [Pohang Accelerator Laboratory, POSTECH, Pohang 790-784 (Korea, Republic of); Park, So Yeong [Department of Physics, POSTECH, Pohang 790-784 (Korea, Republic of); Han, Sung Mi; Kim, Hong-Tae [Department of Anatomy, Catholic University of Daegu, Daegu 705-034 (Korea, Republic of)
Forecasting the financial trends facing intercollegiate athletic programs of public institutions as identified by athletic directors of the ACC, Big 12 and SEC Conferences
forecasts were identified through interviews with an intercollegiate athletic conference commissioner and an intercollegiate athletic consultant and were then rated by a panel of athletic directors from the aforementioned conferences based... on their desirability, impact and likelihood of occurrence. After two rounds of a Delphi procedure, it was determined that over half of the issues, should they occur, would have a high impact. None of the 35 issues were rated as having no or low impact. One issue...
Penry, Jason Coy
Study on copper phthalocyanine and perylene-based ambipolar organic light-emitting field-effect transistors produced using neutral beam deposition method
The neutral cluster beam deposition (NCBD) method has been applied to the production and characterization of ambipolar, heterojunction-based organic light-emitting field-effect transistors (OLEFETs) with a top-contact, multi-digitated, long-channel geometry. Organic thin films of n-type N,N?-ditridecylperylene-3,4,9,10-tetracarboxylic diimide and p-type copper phthalocyanine were successively deposited on the hydroxyl-free polymethyl-methacrylate (PMMA)-coated SiO{sub 2} dielectrics using the NCBD method. Characterization of the morphological and structural properties of the organic active layers was performed using atomic force microscopy and X-ray diffraction. Various device parameters such as hole- and electron-carrier mobilities, threshold voltages, and electroluminescence (EL) were derived from the fits of the observed current-voltage and current-voltage-light emission characteristics of OLEFETs. The OLEFETs demonstrated good field-effect characteristics, well-balanced ambipolarity, and substantial EL under ambient conditions. The device performance, which is strongly correlated with the surface morphology and the structural properties of the organic active layers, is discussed along with the operating conduction mechanism.
Kim, Dae-Kyu; Oh, Jeong-Do; Shin, Eun-Sol; Seo, Hoon-Seok; Choi, Jong-Ho, E-mail: email@example.com [Department of Chemistry, Research Institute for Natural Sciences, Korea University, Anam-Dong, Seoul 136-701 (Korea, Republic of)
Animating Human Athletics Jessica K. Hodgins Wayne L. Wooten
Animating Human Athletics Jessica K. Hodgins Wayne L. Wooten David C. Brogan James F. O animate these behaviors using control algorithms that cause a physically realistic model to perform and biomechanical data. Key Words and Phrases: computer animation, human motion, motion control, dynamic simulation
Brogan, David
BFA Subcommittee on Intercollegiate Athletics 10 November 2000
program; BFA resolution on faculty involvement in athletics · new business: ? 1 #12;· NOVEMBER: Friday 10 · DECEMBER: Friday 8 December, 2-3pm, AD's conference room UCAMP mentor program (Jeannie Dixon) BFA resolution: implementation OASS report/discussion (Mark Nelson) · JANUARY: Monday ? January, 12-1pm, AD
Bradley, Elizabeth
Comparison of 60-Hz electric fields and incandescent light as aversive stimuli controlling the behavior of rats
Rats were exposed to two procedures which enabled them to press a lever to turn off a 90 or 100 kV/m 60-Hz electric field or, later in the study, illumination from an incandescent lamp. Under one procedure, a response turned off the stimulus for a fixed duration, after which the stimulus was turned on again. A response during the off-period restarted the fixed duration. None of the rats turned the field off reliably. Next, under an alternative procedure, pressing one lever turned the field off; pressing the other lever turned it back on; responding under those conditions differed little from that seen at 0 kV/m. Under both procedures, when illumination from an incandescent lamp served as the stimulus, each rat did turn the stimulus off, and performances varied with stimulus intensity. The results show that a 100 kV/m 60-Hz electric field is not sufficient to function as an aversive stimulus under two procedures where illumination from a lamp does function as an aversive stimulus.
Stern, S.; Laties, V.G.
Band-gap nonlinear optical generation: The structure of internal optical field and the structural light focusing
A novel approach for the enhancement of nonlinear optical effects inside globular photonic crystals (PCs) is proposed and systematically studied via numerical simulations. The enhanced optical harmonic generation is associated with two- and three-dimensional PC pumping with the wavelength corresponding to different PC band-gaps. The interactions between light and the PC are numerically simulated using the finite-difference time-domain technique for solving the Maxwell's equations. Both empty and infiltrated two-dimensional PC structures are considered. A significant enhancement of harmonic generation is predicted owing to the highly efficient PC pumping based on the structural light focusing effect inside the PC structure. It is shown that a highly efficient harmonic generation could be attained for both the empty and infiltrated two- and three-dimensional PCs. We are demonstrating the ability for two times enhancement of the parametric decay efficiency, one order enhancement of the second harmonic generation, and two order enhancement of the third harmonic generation in PC structures in comparison to the nonlinear generations in appropriate homogenous media. Obviously, the nonlinear processes should be allowed by the molecular symmetry. The criteria of the nonlinear process efficiency are specified and calculated as a function of pumping wavelength position towards the PC globule diameter. Obtained criterion curves exhibit oscillating characteristics, which indicates that the highly efficient generation corresponds to the various PC band-gap pumping. The highest efficiency of nonlinear conversions could be reached for PC pumping with femtosecond optical pulses; thus, the local peak intensity would be maximized. Possible applications of the observed phenomenon are also discussed.
Zaytsev, Kirill I., E-mail: email@example.com; Katyba, Gleb M.; Yakovlev, Egor V.; Yurchenko, Stanislav O., E-mail: firstname.lastname@example.com [Bauman Moscow State Technical University, 2nd Baumanskaya str. 5, Moscow 105005 (Russian Federation); Gorelik, Vladimir S. [P. N. Lebedev Physics Institute of the Russian Academy of Sciences, Leninskiy Prospekt 53, Moscow 119991 (Russian Federation)
Mapping Athletic Performance Related Genes in the Equine Genome and a Genome Scan for Superior Athletic Performance in the Thoroughbred
in total; Centimorgans (cM) between microsatellites were determined with CRI-MAP. The animal?s athletic ability was estimated using career winnings loge transformed to create a linear trait; unraced animals were treated as missing data. Linkage analysis...
Durkin, Keith W.
Robust Lower Bounds on Intergalactic Magnetic Fields from Simultaneously Observed GeV-TeV Light Curves of the Blazar Mkn 501
We derive model-independent lower bounds on intergalactic magnetic fields from upper limits on the pair echo emission from the blazar Mkn 501, that is, delayed GeV emission from secondary electron-positron pairs produced via interactions of primary TeV gamma rays with the cosmic infrared background. We utilize only simultaneously observed GeV-TeV light curves during the flaring activity in 2009 obtained by VERITAS, MAGIC and {\\it Fermi}-LAT. This leads to limits on the magnetic field strengths of $B \\gtrsim 10^{-19.5} {\\rm G}$ and $B \\gtrsim 10^{-19} {\\rm G}$, at 99% C.L. and 90% C.L., respectively, for a field coherence length of 1 kpc. Our analysis is firmly based on the observational data alone and does not depend on any assumptions concerning the primary TeV flux during unobserved periods. Thus, our evaluation of the flux of the pair echo is conservative and the deduced constraints are much more robust compared to previous studies.
Takahashi, Keitaro; Ichiki, Kiyotomo; Inoue, Susumu
The BFA Intercollegiate Athletics Committee (IAC) has completed its review and discussion of the Coalition on Intercollegiate Athletics (COIA) report, entitled "Framing the Future: Reforming
of the Coalition on Intercollegiate Athletics (COIA) report, entitled "Framing the Future: Reforming-by-campus basis -- for reforming intercollegiate athletics. The University of Colorado has been deeply involved are now models for many of the reforms that COIA recommends; and is, therefore, already a recognized
Extragalactic Transients in the Era of Wide-Field Radio Surveys. I. Detection Rates and Light Curve Characteristics
The impending era of wide-field radio surveys has the potential to revolutionize our understanding of astrophysical transients. Here we evaluate the prospects of a wide range of planned and hypothetical radio surveys using the properties and volumetric rates of known and hypothetical classes of extragalactic synchrotron radio transients (e.g., on- and off-axis gamma-ray bursts [GRB], supernovae, tidal disruption events [TDE], compact object mergers). Utilizing these sources and physically motivated considerations we assess the allowed phase-space of radio luminosity and peak timescale for extragalactic transients. We also include for the first time effects such as redshift evolution of the rates, K-corrections, and non-Euclidean luminosity distance, which affect the detection rates of the most sensitive surveys. The number of detected events is calculated by means of a Monte Carlo method, using the various survey properties (depth, cadence, area) and realistic detection criteria that include a cut on the mini...
Metzger, Brian D; Berger, Edo
Extreme Ultraviolet Light Chris Cosio
Prospectus Extreme Ultraviolet Light Chris Cosio #12;The field of extreme ultraviolet light (XUV to the way XUV interacts with object, XUV properties are difficult to observe. Extreme ultraviolet light is absorbed by all objects it comes in contact with. Furthermore, extreme ultraviolet light also has low
Hart, Gus
E-Print Network 3.0 - athletic training career Sample Search...
of Athletics Henry B. Frazier III, Alumnus Harry Y. Gamble, Jr., ... Source: Whittle, Mark - Department of Astronomy, University of Virginia Collection: Physics 31...
E-Print Network 3.0 - athletic talent development Sample Search...
talented athletes who have the talent... any special reductions in ... Source: Humphrys, Mark - School of Computing, Dublin City University Collection: Computer Technologies and...
E-Print Network 3.0 - athletes recapture body Sample Search Results
those dealing with academics... policy. The BFA Intercollegiate Athletics Committee (IAC) takes the lead, on the behalf of the BFA Source: Bradley, Elizabeth - Department of...
E-Print Network 3.0 - athletic performance Sample Search Results
Assembly (BFA) is the policy... policy. The BFA Intercollegiate Athletics Committee (IAC) takes the lead, on ... Source: Bradley, Elizabeth - Department of Computer Science,...
E-Print Network 3.0 - athletics minor trauma Sample Search Results
is what the NCAA Certification process is for. Tommy agreed... for the next Athletics Council meeting, which is Tuesday, February 15. ... Source: Beresnev, Igor - Department of...
Structural dynamics of phenylisothiocyanate in the light-absorbing excited states: Resonance Raman and complete active space self-consistent field calculation study
The excited state structural dynamics of phenyl isothiocyanate (PITC) after excitation to the light absorbing S{sub 2}(A?), S{sub 6}(A?), and S{sub 7}(A?) excited states were studied by using the resonance Raman spectroscopy and complete active space self-consistent field method calculations. The UV absorption bands of PITC were assigned. The vibrational assignments were done on the basis of the Fourier transform (FT)-Raman and FT-infrared measurements, the density-functional theory computations, and the normal mode analysis. The A-, B-, and C-bands resonance Raman spectra in cyclohexane, acetonitrile, and methanol solvents were, respectively, obtained at 299.1, 282.4, 266.0, 252.7, 228.7, 217.8, and 208.8 nm excitation wavelengths to probe the corresponding structural dynamics of PITC. The results indicated that the structural dynamics in the S{sub 2}(A?), S{sub 6}(A?), and S{sub 7}(A?) excited states were very different. The conical intersection point CI(S{sub 2}/S{sub 1}) were predicted to play important role in the low-lying excited state decay dynamics. Two major decay channels were predicted for PITC upon excitation to the S{sub 2}(A?) state: the radiative S{sub 2,min} ? S{sub 0} transition and the nonradiative S{sub 2} ? S{sub 1} internal conversion via CI(S{sub 2}/S{sub 1}). The differences in the decay dynamics between methyl isothiocyanate and PITC in the first light absorbing excited state were discussed. The role of the intersystem crossing point ISC(S{sub 1}/T{sub 1}) in the excited state decay dynamics of PITC is evaluated.
Ouyang, Bing, E-mail: email@example.com; Xue, Jia-Dan, E-mail: firstname.lastname@example.com; Zheng, Xuming, E-mail: firstname.lastname@example.com, E-mail: email@example.com, E-mail: firstname.lastname@example.com [Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018 (China)] [Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018 (China); Fang, Wei-Hai, E-mail: firstname.lastname@example.com, E-mail: email@example.com, E-mail: email@example.com [Department of Chemistry, Beijing Normal University, Beijing 100875 (China)] [Department of Chemistry, Beijing Normal University, Beijing 100875 (China)
UBC Social Ecological Economic Development Studies (SEEDS) Student Report Sustainable Transportation: UBC Athletic Events as an agent of change
Inter-Faculty Cup Athletics and Sustainable Campus Living ExpoUBC Social Ecological Economic Development Studies (SEEDS) Student Report Sustainable from dan-dare.org Sustainable Transportation: UBC Athletic Events as an agent of change Erin Brophy
Bowling Green State University Travel and Entertainment Expenses Athletic/Bowl Game Travel Related
Page 1 Bowling Green State University Travel and Entertainment Expenses Athletic/Bowl Game Travel Related The University is required to determine whether there is a taxable benefit (i.e., income) attributable to any persons traveling to or attending an athletic event, specifically a bowl game, when
Moore, Paul A.
Commercial Lighting
Broader source: Energy.gov [DOE]
Commercial lighting accounts for more than 20 percent of total commercial building energy use. The Energy Department works to reduce lighting energy use through research and deployment.
Light intensity compressor
DOE Patents [OSTI]
In a system for recording images having vastly differing light intensities over the face of the image, a light intensity compressor is provided that utilizes the properties of twisted nematic liquid crystals to compress the image intensity. A photoconductor or photodiode material that is responsive to the wavelength of radiation being recorded is placed adjacent a layer of twisted nematic liquid crystal material. An electric potential applied to a pair of electrodes that are disposed outside of the liquid crystal/photoconductor arrangement to provide an electric field in the vicinity of the liquid crystal material. The electrodes are substantially transparent to the form of radiation being recorded. A pair of crossed polarizers are provided on opposite sides of the liquid crystal. The front polarizer linearly polarizes the light, while the back polarizer cooperates with the front polarizer and the liquid crystal material to compress the intensity of a viewed scene. Light incident upon the intensity compressor activates the photoconductor in proportion to the intensity of the light, thereby varying the field applied to the liquid crystal. The increased field causes the liquid crystal to have less of a twisting effect on the incident linearly polarized light, which will cause an increased percentage of the light to be absorbed by the back polarizer. The intensity of an image may be compressed by forming an image on the light intensity compressor.
Rushford, Michael C. (Livermore, CA)
E-Print Network 3.0 - athletic injuries Sample Search Results
the time of injury the following chain of command would be used... or is notified by the head athletic trainer of a ... Source: O'Toole, Alice J. - School of Behavioral and Brain...
E-Print Network 3.0 - athletic association injury Sample Search...
The Relationship between Personality Traits and Coachability in Female College Softball Athletes
and foremost, I thank the college head coaches and athletes who participated in this study. Without their willingness to participate, this study would not have been possible. Second, I extend my gratitude to Dr. Sarah Price and Dr. Jim La...
Favor, Judy
E-Print Network 3.0 - adolescent competitive athletes Sample...
<< < 1 2 3 4 5 > >> 1 APPEALS PROCESS FOR DENIAL OF RELEASEPERMISSION TO CONTACT A student-athlete may transfer to another institution at will and begin practicing with the new...
Athletic Ability and Physical Attractiveness differences between aggressive-rejected and aggressive-nonrejected children
This study explored differences between aggressive-rejected and aggressive-nonrejected children on measures of Athletic Ability (AA) and Physical Attractiveness (PA). A main goal of the study was to explore possible differences within this sample...
Oxman, Danielle Louise
Michigan Technological University FRESHMAN-COHORT GRADUATION RATES All Students Student-Athletes #
-Athletes # 2005-06 Graduation Rate 65% 76% Four-Class Average 65% 67% Student-Athlete Academic Success Rate 83% 1. Graduation-Rates Data a. All Students Freshman Rate Men 2005-06 4-Class N % N % Am. Ind./AN *** *** 31 45 Freshman Rate Women 2005-06 4-Class N % N % *** *** 15 53 4 50 12 50 *** *** 21 57 4 75 8 75
Smart Lighting Controller!! Smart lighting!
1! Smart Lighting Controller!! #12;2! Smart lighting! No need to spend energy lighting the room if://blogs.stthomas.edu/realestate/2011/01/24/residential-real-estate-professionals-how-do-you- develop feedback! There is a connection between the output and the input! Therefore forces inputs to same voltage
Anderson, Betty Lise
Commercial Lighting and LED Lighting Incentives
Incentives for energy efficient commercial lighting equipment as well as commercial LED lighting equipment are available to businesses under the Efficiency Vermont Lighting and LED Lighting...
Visual Fields." Trans. Lighting Principles Subcommittee:For General Offi ::e Lighting." LBL 1/10514, Energy andThe Energy Effectiveness Lighting Systems." L , Design and
Clear, Robert
Lighting Renovations
When undertaking a lighting renovation in a Federal building, daylighting is the primary renewable energy opportunity. Photovoltaics (PV) also present an excellent opportunity. While this guide...
Cerenkov Light
ScienceCinema (OSTI)
The bright blue glow from nuclear reactors is Cerenkov light. Karl Slifer describes how nuclear physicists can use this phenomenon to study the nucleus of the atom.
Slifer, Karl
Demonstration Assessment of Light-Emitting Diode Roadway Lighting on the FDR Drive in New York, New York
This a report about a field study of light-emitting diodes street lights by four different manufacturers installed on the FDR Drive in New York City, NY.
Myer, Michael; Hazra, Oindrila; Kinzey, Bruce R.
New Technology Demonstration Program - Results of an Attempted Field Test of Full-Spectrum Polarized Lighting in a Mail Processing/Office Space
An assessment of the potential energy savings associated with the use of full-spectrum polarized lighting in a work space was initiated as part of the Department of Energy's (DOE) Federal Energy Management Program (FEMP) New Technology Demonstration Program (NTDP) in 1997. This project was intended to provide information on the effectiveness and application of this technology that could help federal energy managers and other interested individuals determine whether this technology had benefits for their occupied spaces. The use of an actual mail processing/office work area provided the capability of evaluating the technologies effectiveness in the real world.
Richman, Eric E.
New Technology Demonstration Program - Results of an Attempted Field Test of Multi-Layer Light Polarizing Panels in an Office Space
An assessment of the potential energy savings associated with the use of multi-layer light polarizing panels in an office space was initiated as part of the Department of Energy's (DOE) Federal Energy Management Program (FEMP) New Technology Demonstration Program (NTDP) in 1997. This project was intended to provide information on the effectiveness and application of this technology that could help federal energy managers and other interested individuals determine whether this technology had benefits for their occupied spaces. The use of an actual working office area provided the capability of evaluating the technology's effectiveness in the real world.
Depolarized light scattering from anisotropic particles: the influence of the particle shape on the field autocorrelation function -- Part I: prolate particles
We provide a theoretical analysis for the intermediate scattering function typically measured in depolarized dynamic light scattering experiments. We calculate this function $g_1^{\\rm VH}(Q,t)$ explicitly in a vertical-horizontal scattering geometry for differently shaped solids of revolution. The shape of prolate cylinders, spherocylinders, spindles, and double cones with variable aspect ratio is expanded in rotational invariants $f_{lm}(r)$. By Fourier transform of these expansion coefficients, a formal multipole expansion of the scattering function is obtained, which is used to calculate the weighting coefficients appearing in the depolarized scattering function. In addition to translational and rotational diffusion, especially the translational-rotational coupling of shape-anisotropic objects is considered. From the short-time behavior of the intermediate scattering function, the first cumulants $\\Gamma(Q)$ are calculated. In a depolarized scattering experiment, they deviate from the simple proportionalit...
Passow, Christopher; L�wen, Hartmut; Wagner, Joachim
Robust Lower Bounds on Magnetic Fields in Intergalactic Voids from Long-Term GeV-TeV Light Curves of the Blazar Mrk 421
Lower bounds are derived on the amplitude B of intergalactic magnetic fields (IGMFs) in the region between our Galaxy and the blazar Mrk 421, from constraints on the delayed GeV flux of pair echos that are emitted by secondary electrons and positrons produced in gamma-gamma interactions between primary TeV gamma-rays and the cosmic infrared background. The distribution of galaxies mapped by the Sloan Digital Sky Survey shows that this region is dominated by a large intergalactic void. We utilize data from long-term, simultaneous GeV-TeV observations by the Fermi Large Area Telescope and the ARGO-YBJ experiment extending over 600 days. For an assumed value of B, we evaluate the daily GeV flux of the pair echo expected from the TeV data, select the dates where this exceeds the Fermi 2-sigma sensitivity, compute the probability that this flux is excluded by the Fermi data for each date, and then combine the probabilities using the inverse normal method. Consequently, we exclude B < 10^(-20.5) G for a field co...
Takahashi, Keitaro; Ichiki, Kiyotomo; Inoue, Susumu; Takami, Hajime
INDEX DESCRIPTION FUND ORGN PROG ACTV ATAF98 ATH Athletics -Foundation 433500 630001 46100
INDEX DESCRIPTION FUND ORGN PROG ACTV ATAF98 ATH Athletics - Foundation 433500 630001 46100 CASF99 30765 DCSP EASF90 EAS Civil Engr-Foundation 433500 270101 03001 DCEN EASF91 EAS Comp Sci - Foundation 433500 270101 03001 DCMP EASF92 EAS Elec/Comp Engr - Foundation 433500 270101 03001 DEEN EASF93 EAS Mech
Caughman, John
William and Mary Athletics State Vehicle / Rental Vehicle / Personal Vehicle Policies
William and Mary Athletics State Vehicle / Rental Vehicle / Personal Vehicle Policies Last Update: 2/14/14 W&M's vehicle use policy requires that a driver authorization form be completed and approved before driving any vehicle (including a personal vehicle) for university business or a university
1Athletic Training & Sports Health Care | Vol. 5 No. X 2013 Enhancing Ice Hockey Skills Through
1Athletic Training & Sports Health Care | Vol. 5 No. X 2013 Enhancing Ice Hockey Skills Through transparent and opaque states to produce stroboscopic visual conditions. Previous research has demonstrated in professional ice hockey players. Participants trained either with stroboscopic eyewear (strobe group
Mitroff, Stephen
A Look At Steam Usage in William's Athletic Facilities Patrick Morrissey
A Look At Steam Usage in William's Athletic Facilities Patrick Morrissey Geosciences 206 Final Project Professor Dethier May 18, 2010 #12;Introduction: This paper will examine steam usage trends that Towne FH and Lansing Chapman both draw their steam from an enclosed loop heating system.23
Aalberts, Daniel P.
Light Computing
A configuration of light pulses is generated, together with emitters and receptors, that allows computing. The computing is extraordinarily high in number of flops per second, exceeding the capability of a quantum computer for a given size and coherence region. The emitters and receptors are based on the quantum diode, which can emit and detect individual photons with high accuracy.
Gordon Chalmers
Light-by-Light Scattering Effect in Light-Cone Supergraphs
We give a relatively simple explanation of the light-cone supergraph prediction for the UV properties of the maximally supersymmetric theories. It is based on the existence of a dynamical supersymmetry which is not manifest in the light-cone supergraphs. It suggests that N=4 supersymmetric Yang-Mills theory is UV finite and N=8 supergravity is UV finite at least until 7 loops whereas the $n$-point amplitudes have no UV divergences at least until $L=n+3$. Here we show that this prediction can be deduced from the properties of light-cone supergraphs analogous to the light-by-light scattering effect in QED. A technical aspect of the argument relies on the observation that the dynamical supersymmetry action is, in fact, a compensating field-dependent gauge transformation required for the retaining the light-cone gauge condition $A_+=0$.
Renata Kallosh; Pierre Ramond
Lighting Inventory Lighting Theatre and Drama
Lighting Inventory Lighting Theatre and Drama Description Totals R.Halls Wells- Metz Light ERS ETC SourceFour 25 25 50 degree ERS Strand Lighting 64 14 24 12 14 36 degree ERS ETC Source Four 15 15 36 degree ERS Strand Lighting 124 60 58 2 4 26 degree ERS ETC SourceFour 2 2 26 degree ERS Strand
Indiana University
Head black woman in charge: An investigation of how black female athletic directors negotiate their race, gender, and class identities
Framed as an instrumental case study, the purpose of this investigation was to understand how a select group of women, Black female athletic directors, define and negotiate their race, gender, and class identities. Data was collected via a...
McDowell, Jacqueline
Light Source
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: VegetationEquipment Surfaces and Interfaces Sample6, 2011 LawrenceEfeedstocks and the climateLife a Light
Light' Darkness
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: VegetationEquipment Surfaces and Interfaces Sample6, 2011 LawrenceEfeedstocks and the climateLifeLight to
Residential Lighting
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -the Mid-Infrared atEffectquestionnairesU.S. EnergyEnergy EfficiencyLighting
Light Water Reactor Sustainability
3 Light Water Reactor Sustainability Program ACCOMPLISHMENTS REPORT 2013 Accomplishments Report | Light Water Reactor Sustainability 2 T he mission of the Light Water Reactor...
4 Light Water Reactor Sustainability ACCOMPLISHMENTS REPORT 2014 Accomplishments Report | Light Water Reactor Sustainability 2 T he mission of the Light Water Reactor...
Sustainable Office Lighting Options
Sustainable Office Lighting Options Task Lighting: Task lighting is a localized method of lighting a workspace so that additional, unnecessary lighting is eliminated, decreasing energy usage and costs. Illumination levels in the targeted work areas are higher with task lighting than with the ambient levels
Massachusetts at Amherst, University of
ET Field Tests ARC-Light
Utility Resources News & Events Expand News & Events Skip navigation links Smart Grid Demand Response Energy Efficiency Emerging Technologies Current Research Portfolio...
Comparative study of field-dependent carrier dynamics and emission kinetics of InGaN/GaN light-emitting diodes grown on (11 2 2) semipolar versus (0001) polar
Articles you may be interested in Ultraviolet light-emitting diodes grown by plasma-assisted molecular beam light-emitting diodes prepared on ( 11 2 ¯ 2 ) -plane GaN J. Appl. Phys. 100, 113109 (2006); 10.1063/1.2382667 Demonstration of a semipolar ( 10 1 ¯ 3 ¯ ) In Ga N Ga N green light emitting diode Appl. Phys. Lett. 87, 231110
Demir, Hilmi Volkan
Optical sensor of magnetic fields
An optical magnetic field strength sensor for measuring the field strength of a magnetic field comprising a dilute magnetic semi-conductor probe having first and second ends, longitudinally positioned in the magnetic field for providing Faraday polarization rotation of light passing therethrough relative to the strength of the magnetic field. Light provided by a remote light source is propagated through an optical fiber coupler and a single optical fiber strand between the probe and the light source for providing a light path therebetween. A polarizer and an apparatus for rotating the polarization of the light is provided in the light path and a reflector is carried by the second end of the probe for reflecting the light back through the probe and thence through the polarizer to the optical coupler. A photo detector apparatus is operably connected to the optical coupler for detecting and measuring the intensity of the reflected light and comparing same to the light source intensity whereby the magnetic field strength may be calculated.
Butler, M.A.; Martin, S.J.
Gravitational Bending of Light with Frequency Shifts
Non-static gravitational fields generally introduce frequency shifts when bending light. In this paper, I discuss the frequency shifts induced in the bending of light by moving masses. As examples, I treat the recently discovered high-velocity pulsar PSR 2224+65 and a typical Einstein ring.
P. D. Morley
Lighting Options for Homes.
This report covers many aspects of various lighting options for homes. Types of light sources described include natural light, artificial light, incandescent lamps, fluorescent lamps, and high intensity discharge lamps. A light source selection guide gives the physical characteristics of these, design considerations, and common applications. Color, strategies for efficient lighting, and types of lighting are discussed. There is one section giving tips for various situations in specific rooms. Rooms and types of fixtures are shown on a matrix with watts saved by using the recommended type lighting for that room and room location. A major emphasis of this report is saving energy by utilizing the most suitable, recommended lighting option. (BN)
Baker, W.S.
Mobile lighting apparatus
A mobile lighting apparatus includes a portable frame such as a moveable trailer or skid having a light tower thereon. The light tower is moveable from a stowed position to a deployed position. A hydrogen-powered fuel cell is located on the portable frame to provide electrical power to an array of the energy efficient lights located on the light tower.
Roe, George Michael; Klebanoff, Leonard Elliott; Rea, Gerald W; Drake, Robert A; Johnson, Terry A; Wingert, Steven John; Damberger, Thomas A; Skradski, Thomas J; Radley, Christopher James; Oros, James M; Schuttinger, Paul G; Grupp, David J; Prey, Stephen Carl
EK101 Engineering Light Smart Lighting
EK101 Engineering Light Smart Lighting Homework for 9/10 1. Make an estimate (using if the patent is granted.) 3. What is a lumen? A lux? How are the two related? How would you use a lux meter, (Lux, Lumens/m2) Luminous Flux: Perceivable light power from a source, (Lumens) Use the lux meter
Bifano, Thomas
Specific light in sculpture
Specific light is defined as light from artificial or altered natural sources. The use and manipulation of light in three dimensional sculptural work is discussed in an historic and contemporary context. The author's work ...
Powell, John William
Interference between electronic lighting and other appliances
This paper presents empirical data from the laboratory and the field to provide an overview of electromagnetic interference between high-efficiency electronic lighting and certain other electronic devices, such as power-line carrier systems, security systems, and remote controls for televisions and VCRs. Reported cases involving both electronic lighting emissions and immunity in building power systems are summarized according to basic interference mechanisms. To illustrate the potential complexities of this problem, the paper describes a case where high-efficiency lighting interfered with a hearing aid. The hearing aid case includes a field survey, laboratory investigations, and recommended solutions to the problem.
Schwabe, R.J.; Zelingher, S. [New York Power Authority, New York, NY (United States); Key, T.; Phipps, K. [EPRI Power Electronics Applications Center, Knoxville, TN (United States)
LEDs for Energy Efficient Greenhouse Lighting
Light energy is an important factor for plant growth. In regions where the natural light source, i.e. solar radiation, is not sufficient for growth optimization, additional light sources are being used. Traditional light sources such as high pressure sodium lamps and other metal halide lamps are not very efficient and generate high radiant heat. Therefore, new sustainable solutions should be developed for energy efficient greenhouse lighting. Recent developments in the field of light source technologies have opened up new perspectives for sustainable and highly efficient light sources in the form of light-emitting diodes, i.e. LEDs, for greenhouse lighting. This review focuses on the potential of LEDs to replace traditional light sources in the greenhouse. In a comparative economic analysis of traditional vs. LED lighting, we show that the introduction of LEDs allows reduction of the production cost of vegetables in the long-run of several years, due to the high energy efficiency, low maintenance cost and lon...
Singh, Devesh; Meinhardt-Wollweber, Merve; Roth, Bernhard
Imaging spectrometer wide field catadioptric design
A wide field catadioptric imaging spectrometer with an immersive diffraction grating that compensates optical distortions. The catadioptric design has zero Petzval field curvature. The imaging spectrometer comprises an entrance slit for transmitting light, a system with a catadioptric lens and a dioptric lens for receiving the light and directing the light, an immersion grating, and a detector array. The entrance slit, the system for receiving the light, the immersion grating, and the detector array are positioned wherein the entrance slit transmits light to the system for receiving the light and the system for receiving the light directs the light to the immersion grating and the immersion grating receives the light and directs the light through the system for receiving the light to the detector array.
Chrisp; Michael P. (Danville, CA)
Electromagnetic reactions on light nuclei
Electromagnetic reactions on light nuclei are fundamental to advance our understanding of nuclear structure and dynamics. The perturbative nature of the electromagnetic probes allows to clearly connect measured cross sections with the calculated structure properties of nuclear targets. We present an overview on recent theoretical ab-initio calculations of electron-scattering and photonuclear reactions involving light nuclei. We encompass both the conventional approach and the novel theoretical framework provided by chiral effective field theories. Because both strong and electromagnetic interactions are involved in the processes under study, comparison with available experimental data provides stringent constraints on both many-body nuclear Hamiltonians and electromagnetic currents. We discuss what we have learned from studies on electromagnetic observables of light nuclei, starting from the deuteron and reaching up to nuclear systems with mass number A=16.
Sonia Bacca; Saori Pastore
Advanced Lighting Program Development (BG9702800) Final Report
The report presents a long-range plan for a broad-based, coordinated research, development and market transformation program for reducing the lighting energy intensities in commercial and residential buildings in California without compromising lighting quality. An effective program to advance lighting energy efficiency in California must be based on an understanding that lighting is a mature field and the lighting industry has developed many specialized products that meet a wide variety of light needs for different building types. Above all else, the lighting field is diverse and there are applications for a wide range of lighting products, systems, and strategies. Given the range of existing lighting solutions, an effective energy efficient lighting research portfolio must be broad-based and diverse to match the diversity of the lighting market itself. The belief that there is one solution--a magic bullet, such as a better lamp, for example--that will propel lighting efficiency across all uses to new heights is, in the authors' opinion, an illusion. A multi-path program is the only effective means to raising lighting efficiency across all lighting applications in all building types. This report presents a list of 27 lighting technologies and concepts (key activities) that could form the basis of a coordinated research and market transformation plan for significantly reducing lighting energy intensities in California buildings. The total 27 key activities into seven broad classes as follows: Light sources; Ballasts; Luminaires; Lighting Controls; Lighting Systems in Buildings; Human Factors and Education. Each of the above technology classes is discussed in terms of background, key activities, and the energy savings potential for the state. The report concludes that there are many possibilities for targeted research, development, and market transformation activities across all sectors of the building lighting industry. A concerted investment by the state to foster efficiency improvements in lighting systems in commercial and residential buildings would have a major positive impact on energy use and environmental quality in California.
Rubinstein, Francis; Johnson, Steve
Lighting and Daylight Harvesting
exposing us to the latest products and technologies. Daylight Harvesting A system of controlling the direction and the quantity of light both natural and artificial within a given space. This implies: Control of fenestration in terms of size..., transmission and direction. Control of reflected light within a space. Control of electric light in terms of delivery and amount Daylight harvesting systems are typically designed to maintain a minimum recommended light level. This light level...
Bos, J.
Slow light microfluidics: a proposal
The resonant slow light structures created along a thin-walled optical capillary by nanoscale deformation of its surface can perform comprehensive simultaneous detection and manipulation of microfluidic components. This concept is illustrated with a model of a 0.5 millimeter long 5 nm high triangular bottle resonator created at a 50 micron radius silica capillary containing floating microparticles. The developed theory shows that the microparticle positions can be determined from the bottle resonator spectrum. In addition, the microparticles can be driven and simultaneously positioned at predetermined locations by the localized electromagnetic field created by the optimized superposition of eigenstates of this resonator, thus, exhibiting a multicomponent near field optical tweezers.
Sumetsky, M
Kyler Nelson Light Timer
designated by the user, the Arduino board will dim the light to save energy. The user designates the time instance, the light is dimmed using pulse width modulation (PWM) in the Arduino's pin number 11
Kachroo, Pushkin
AIRPORT LIGHTING Session Highlights
AIRPORT LIGHTING Session Highlights In May 2002, the Airport Technical Assistance Program, also known as AirTAP, sponsored three airport-lighting training sessions at different locations in Minnesota information on airport lighting and navigational aid equipment selection, funding, maintenance, and operation
Minnesota, University of
Advanced Demand Responsive Lighting
Advanced Demand Responsive Lighting Host: Francis Rubinstein Demand Response Research Center demand responsive lighting systems Importance of dimming New wireless controls technologies · Advanced Demand Responsive Lighting (commenced March 2007) #12;Objectives · Provide up-to-date information
Light emitting device comprising phosphorescent materials for white light generation
The present invention relates to phosphors for energy downconversion of high energy light to generate a broadband light spectrum, which emit light of different emission wavelengths.
Thompson, Mark E.; Dapkus, P. Daniel
Light Duty Combustion Research: Advanced Light-Duty Combustion...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Combustion Research: Advanced Light-Duty Combustion Experiments Light Duty Combustion Research: Advanced Light-Duty Combustion Experiments 2009 DOE Hydrogen Program and Vehicle...
Photonic crystal light source
A light source is provided by a photonic crystal having an enhanced photonic density-of-states over a band of frequencies and wherein at least one of the dielectric materials of the photonic crystal has a complex dielectric constant, thereby producing enhanced light emission at the band of frequencies when the photonic crystal is heated. The dielectric material can be a metal, such as tungsten. The spectral properties of the light source can be easily tuned by modification of the photonic crystal structure and materials. The photonic crystal light source can be heated electrically or other heating means. The light source can further include additional photonic crystals that exhibit enhanced light emission at a different band of frequencies to provide for color mixing. The photonic crystal light source may have applications in optical telecommunications, information displays, energy conversion, sensors, and other optical applications.
Fleming, James G. (Albuquerque, NM); Lin, Shawn-Yu (Albuquerque, NM); Bur, James A. (Corrales, NM)
Light extraction from organic light-emitting diodes for lighting applications by sand-blasting
Light extraction from organic light-emitting diodes for lighting applications by firstname.lastname@example.com Abstract: Light extraction from organic light-emitting diodes (OLEDs) by scattering the light is one of the effective methods for large-area lighting applications. In this paper, we present a very simple and cost
Field emission from organic materials
Field emission displays (FEDs) show great promise as high performance flat panel displays. The light emission process is efficient, long lifetimes are possible with high brightness, and bright passive matrix displays can ...
Kymissis, Ioannis, 1977-
SMART LIGHTING SYSTEMS ULTIMATE LIGHTING The Smart Lighting
Integration (Holistic Integrated Design) · Sensors as important as LEDs · Interconnected systems (human, building, grid) · Artistic Design Freedom · Lighting is Health, Entertainment, Information and Illumination Cost at any brightness · Chip level integrated electronics THE ERC RESEARCH COVERS THE ENTIRE SUPPLY
Linhardt, Robert J.
Development of optical field emitter arrays
Optical field emitters are electron emission sources actuated by incident light. Optically actuated field emitters may produce ultrafast pulses of electrons when excited by ultrafast optical pulses, thus making them of ...
Yang, Yujia, S.M. Massachusetts Institute of Technology
Institutional Control of NCAA Division I (FBS) Athletics: An Investigation of Economic and Administrative Influences of NCAA Recruiting Infractions
for violations that occurred while recruiting a player.? Does this sound familiar? Similar reports to this hypothetical situation resound as allegations of wrongdoing quickly circulate through various media channels and into the homes of people across... the United States. Instantly, the integrity of the institution and individuals involved with the allegations is questioned by people ranging from college athletics media ?experts? to the average fans discussing the allegations on their lunch break. In one...
Clark, Robert Smith
Arnold Schwarzenegger LIGHTING RESEARCH PROGRAM
Project Summaries ELEMENT 2: ADVANCE LIGHTING TECHNOLOGIES PROJECT 2.1 LIGHT EMITTING DIODE (LED light emitting diodes (LED) technology for general lighting applications by developing a task lamp
Entangled topological features of light
We report the entanglement of topological features, namely, isolated, linked optical vortex loops in the light from spontaneous parametric down-conversion (SPDC). In three dimensions, optical vortices are lines of phase singularity and vortices of energy flow which percolate through all optical fields. This example of entanglement is between features that extend over macroscopic and finite volumes, furthermore, topological features are robust to perturbation . The entanglement of photons in complex three-dimensional(3D) topological states suggests the possibility of entanglement of similar structures in other quantum systems describable by complex scalar functions, such as superconductors, superfluids and Bose-Einstein condensates.
J. Romero; J. Leach; B. Jack; M. R. Dennis; S. Franke-Arnold; S. M. Barnett; M. J. Padgett
New Light Sources for Tomorrow's Lighting Designs
, pioneered for headlam~for the automotive industry, has led to the development of halo en capsule lamps for general lighting. The original90-watt family PAR 38 lamps using tungsten halogen capsules produces the sa amount of useful light in the beam as a I... quartz PAR lamps with similar benefi . Each of these tungsten halogen capsule PAR wattages are av ilable in narrow spot, spot, and flood beam patterns. The most recent developments in the PAR halogen psule family include two entirely new lamp designs...
Krailo, D. A.
National Synchrotron Light Source
A tour of Brookhaven's National Synchrotron Light Source (NSLS), hosted by Associate Laboratory Director for Light Sources, Stephen Dierker. The NSLS is one of the world's most widely used scientific research facilities, hosting more than 2,500 guest researchers each year. The NSLS provides intense beams of infrared, ultraviolet, and x-ray light for basic and applied research in physics, chemistry, medicine, geophysics, environmental, and materials sciences.
LED Lighting Retrofit
? Municipal Street Lighting Consortium ? American Public Power Association (APPA) ? Demonstration in Energy Efficiency Development (DEED) ? Source of funding and database of completed LED roadway projects 6 Rules of the Road ESL-KT-11-11-57 CATEE 2011..., 2011 ? 9 Solar-Assisted LED Case Study LaQuinta Hotel, Cedar Park, Texas ? Utilizes 18 - ActiveLED Solar-Assisted Parking Lot Lights ? Utilizes ?power management? to extend battery life while handling light output ? Reduces load which reduces PV...
Shaw-Meadow, N.
High efficiency incandescent lighting
Incandescent lighting structure. The structure includes a thermal emitter that can, but does not have to, include a first photonic crystal on its surface to tailor thermal emission coupled to, in a high-view-factor geometry, a second photonic filter selected to reflect infrared radiation back to the emitter while passing visible light. This structure is highly efficient as compared to standard incandescent light bulbs.
Bermel, Peter; Ilic, Ognjen; Chan, Walker R.; Musabeyoglu, Ahmet; Cukierman, Aviv Ruben; Harradon, Michael Robert; Celanovic, Ivan; Soljacic, Marin
Total Light Management
Presentation covers total light management, and is given at the Spring 2010 Federal Utility Partnership Working Group (FUPWG) meeting in Providence, Rhode Island.
Lighting Technology Panel
Presentation covers the�Lighting Technology Panel for the Federal Utility Partnership Working Group (FUPWG) meeting, held on�November 18-19, 2009.�
Comparing Light Bulbs
In this exercise, students will use a light to demonstrate the difference between being energy-efficient and energy-wasteful, and learn what energy efficiency means.
Solid-State Lighting
research and design. Quality LED luminaires require program designed to successfully move solid-state lighting precise design of several components -LED arrays, electronic into the...
OpenGL Lighting 13. OpenGL Lighting
OpenGL Lighting 13. OpenGL Lighting · Overview of Lighting in OpenGL In order for lighting to have an effect in OpenGL, two things are required: A light An object to be lit Lights can be set to any color determine how they reflect the light which hits them. The color(s) of an object is determined
McDowell, Perry
Light-Quark Decays in Heavy Hadrons
We consider weak decays of heavy hadrons (bottom and charmed) where the heavy quark acts as a spectator. Theses decays are heavily phase-space suppressed but may become experimentally accessible in the near future. These decays are interesting as a QCD laboratory to study the behaviour of the light quarks in the colour-background field of the heavy spectator.
Faller, Sven
Golowasch, J., Abbott, L.F., and Marder, E. (1999). J. Neurosci. 19, light increment over a background field is known to RC33. follow Weber's law. Likewise, the responses of sensory
a background field is known to RC33. follow Weber's law. Likewise, the responses of sensory Harris-Warrick, R Guckenheimer, J. (1995). J. Neurophysiol. 74, 14041420. Weber's law, and the coding of sensory input by prefrontal neu- Stemmler, M., and Koch, C. (1999). Nat. Neurosci. 2, 521527. rons according to Weber's law
Nieder, Andreas
Injection and transport processes in organic light emitting diodes based on N. Huby a,b
1 Injection and transport processes in organic light emitting diodes based on a silole. N. Huby a- conductors in light emitting diodes1 . The different fields of research around the organic electronic allowed
Splayed mirror light pipes
An expression is given for the transmission of the rectangular-section mirror light pipe. The expression is used to model throughputs for simulated solar conditions over a calender year. It is found that the splaying of a mirror light pipe results in a significant increase in throughputs particularly in winter months. (author)
Swift, P.D. [School of Physical Sciences, Dublin City University, Dublin 9 (Ireland)
Explosively pumped laser light
A single shot laser pumped by detonation of an explosive in a shell casing. The shock wave from detonation of the explosive causes a rare gas to luminesce. The high intensity light from the gas enters a lasing medium, which thereafter outputs a pulse of laser light to disable optical sensors and personnel.
Piltch, Martin S. (Los Alamos, NM); Michelotti, Roy A. (Los Alamos, NM)
Reducing home lighting expenses
Ways to reduce lighting expenses are summarized. These include: turning off lights when not in use; keeping fixtures and lamps clean; replacing lamps with more efficient types; using three-way bulbs; use of daylighting; buying fewer lamps and reducing lamp wattage; consider repainting rooms; replacing recessed fixtures with tracklighting; and using efficient lamps for outdoor use. (MCW)
Aimone, M.A.
Efficient tunable switch from slow light to fast light in quantum opto-electromechanical system
The control of slow and fast light propagation, in the probe transmission in a single experiment, is a challenging task. This type of control can only be achieved through highly nonlinear interactions and additional interfering pathway(s), which is therefore seldom reported. Here, we devise a scheme in which slow light, and a tunable switch from slow light to fast light can be achieved in the probe transmission based on a hybrid setup, which is composed of an optical cavity with two charged nano mechanical resonators (MRs). The two MRs are electrostatically coupled via tunable Coulomb coupling strength ($g_{c}$) making a quantum opto-electromechanical system (QOEMS). The parameter $g_{c}$ that couples the two MRs can be switched on and off by controlling the bias voltages on the MRs, and acts as a tunable switch that allows the propagation of transmitted probe field as slow light ($g_{c} \
M. Javed Akram; Khalid Naseer; Farhan Saif
VIRTUAL LIGHT: DIGITALLY-GENERATED LIGHTING FOR VIDEO CONFERENCING APPLICATIONS Andrea Basso method to improve the lighting conditions of a real scene or video sequence. In particular we concentrate on modifying real light sources intensities and inserting virtual lights into a real scene viewed from a fixed
Fisher, Kathleen
Lighting affects appearance LightSource emits photons
1 Lighting affects appearance #12;2 LightSource emits photons Photons travel in a straight line). And then some reach the eye/camera. #12;3 Reflectance Model how objects reflect light. Model light sources Algorithms for computing Shading: computing intensities within polygons Determine what light strikes what
Jacobs, David
Nanoantennas for enhanced light trapping in transparent organic solar cells
We propose a light-trapping structure offering a significant enhancement of photovoltaic absorption in transparent organic solar cells operating at infrared while the visible light transmission keeps sufficiently high. The main mechanism of light trapping is related with the excitation of collective oscillations of the metal nanoantenna arrays, characterized by advantageous field distribution in the volume of the solar cell. It allows more than triple increase of infrared photovoltaic absorption.
Voroshilov, Pavel M; Belov, Pavel A
field, and it could shed light on the problems related to connecting solar surface phenomenaROTATION OF WHITE LIGHT CME STRUCTURES AS INFERRED FROM LASCO CORONAGRAPH Vasyl Yurchyshyn Big Bear Solar Observatory 40386 North Shore Lane, Big Bear City, CA 92314 Valentyna Abramenko Big Bear Solar
Sandia National Laboratories: "Solid-state Lighting: 'The case...
illumination. Since then, investments in the now-renamed field of solid-state lighting (SSL) have accelerated and considerable progress has been made, not always in the directions...
Electromagnetically Induced Transparency and Light Storage in an Atomic Mott Insulator
We experimentally demonstrate electromagnetically induced transparency and light storage with ultracold 87Rb atoms in a Mott insulating state in a three dimensional optical lattice. We have observed light storage times of about 240 ms, to our knowledge the longest ever achieved in ultracold atomic samples. Using the differential light shift caused by a spatially inhomogeneous far detuned light field we imprint a "phase gradient" across the atomic sample, resulting in controlled angular redirection of the retrieved light pulse.
U. Schnorrberger; J. D. Thompson; S. Trotzky; R. Pugatch; N. Davidson; S. Kuhr; I. Bloch
Green Light Pulse Oximeter
A reflectance pulse oximeter that determines oxygen saturation of hemoglobin using two sources of electromagnetic radiation in the green optical region, which provides the maximum reflectance pulsation spectrum. The use of green light allows placement of an oximetry probe at central body sites (e.g., wrist, thigh, abdomen, forehead, scalp, and back). Preferably, the two green light sources alternately emit light at 560 nm and 577 nm, respectively, which gives the biggest difference in hemoglobin extinction coefficients between deoxyhemoglobin, RHb, and oxyhemoglobin, HbO.sub.2.
Scharf, John Edward (Oldsmar, FL)
White light velocity interferometer
The invention is a technique that allows the use of broadband and incoherent illumination. Although denoted white light velocimetry, this principle can be applied to any wave phenomenon. For the first time, powerful, compact or inexpensive sources can be used for remote target velocimetry. These include flash and arc lamps, light from detonations, pulsed lasers, chirped frequency lasers, and lasers operating simultaneously in several wavelengths. The technique is demonstrated with white light from an incandescent source to measure a target moving at 16 m/s.
Erskine, David J. (Oakland, CA)
The invention is a technique that allows the use of broadband and incoherent illumination. Although denoted white light velocimetry, this principle can be applied to any wave phenomenon. For the first time, powerful, compact or inexpensive sources can be used for remote target velocimetry. These include flash and arc lamps, light from detonations, pulsed lasers, chirped frequency lasers, and lasers operating simultaneously in several wavelengths. The technique is demonstrated with white light from an incandescent source to measure a target moving at 16 m/s. 41 figs.
Erskine, D.J.
Lakeview Light and Power- Commercial Lighting Rebate Program
Lakeview Light and Power offers a commercial lighting rebate program. Rebates apply to the installation of energy efficient lighting retrofits in non-residential buildings. The rebate program is...
Interfacing light and single atoms with a lens
We characterize the interaction between a single atom or similar microscopic system and a light field via the scattering ratio. For that, we first derive the electrical field in a strongly focused Gaussian light beam, and then consider the atomic response. Following the simple scattering model, the fraction of scattered optical power for a weak coherent probe field leads to unphysical scattering ratios above 1 in the strong focusing regime. A refined model considering interference between exciting and scattered field into finite-sized detectors or optical fibers is presented, and compared to experimental extinction measurements for various focusing strengths.
Meng Khoon Tey; Gleb Maslennikov; Timothy C. H. Liew; Syed Abdullah Aljunid; Florian Huber; Brenda Chng; Zilong Chen; Valerio Scarani; Christian Kurtsiefer
Light Vector Mesons
This article reviews the current status of experimental results obtained in the measurement of light vector mesons produced in proton-proton and heavy ion collisions at different energies. The review is focused on two phenomena related to the light vector mesons; the modification of the spectral shape in search of Chiral symmetry restoration and suppression of the meson production in heavy ion collisions. The experimental results show that the spectral shape of light vector mesons are modified compared to the parameters measured in vacuum. The nature and the magnitude of the modification depends on the energy density of the media in which they are produced. The suppression patterns of light vector mesons are different from the measurements of other mesons and baryons. The mechanisms responsible for the suppression of the mesons are not yet understood. Systematic comparison of existing experimental results points to the missing data which may help to resolve the problem.
Alexander Milov
A tour of Brookhaven's National Synchrotron Light Source (NSLS). The NSLS is one of the world's most widely used scientific research facilities, hosting more than 2,500 guest researchers each year. The NSLS provides intense beams of infrared, ultraviole
Efficient Light Sources Today
This paper reviews new lamp and lighting technology in terms of application and economic impact. Included are the latest advances in High Intensity Discharge systems, energy saving fluorescent lamps and ballasts, and the new state of the art high...
Hart, A. L.
Natural lighting and skylights
outlined herein, the feasibility of using scale models for studying skylights is also an established fact. The method of analysis by models can be a valuable tool to any designer who is concerned about day-lighting....
Evans, Benjamin Hampton
Reading Municipal Light Department- Business Lighting Rebate Program
Reading Municipal Light Department (RMLD) offers incentives for non-residential customers to install energy efficient lights and sensors in existing facilities. In addition to rebates for the...
Types of Lighting in Commercial Buildings - Lighting Characteristics
Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]
of a light source's accuracy in rendering different colors when compared to a reference light source. The highest attainable CRI is 100. Lamps with CRIs above 70 are...
Columbia Water and Light- HVAC and Lighting Efficiency Rebates
Columbia Water and Light (CWL) offers rebates to its commercial and industrial customers for the purchase of high efficiency HVAC installations and efficient lighting. Incentives for certain...
Induction Lighting: An Old Lighting Technology Made New Again...
around the same time that his rival, Thomas Edison, was working to improve the incandescent light bulb. In the early 1990s, several major lighting manufacturers introduced...
Peninsula Light Company- Commercial Efficient Lighting Rebate Program
Peninsula Light Company (PLC) offers a rebate program for commercial customers who wish to upgrade to energy efficient lighting. Participating customers must be served by PLC commercial service....
Practice Field Practice Field
Courts Soccer Field Swimming pool Bandeen Hall Mountain House # 3 # 2 Golf Course Security Patterson Hall.B. Scott Arena Library Centennial Theater Mc Greer Hall Pollack Hall New Johnson Science Building Dewhurst Dining Hall Champlain Regional College # 4 Mackinnon Hall Residence # 6 Memorial House Retired Faculty
Solid state lighting component
An LED component comprising an array of LED chips mounted on a planar surface of a submount with the LED chips capable of emitting light in response to an electrical signal. The LED chips comprise respective groups emitting at different colors of light, with each of the groups interconnected in a series circuit. A lens is included over the LED chips. Other embodiments can comprise thermal spreading structures included integral to the submount and arranged to dissipate heat from the LED chips.
Yuan, Thomas; Keller, Bernd; Ibbetson, James; Tarsa, Eric; Negley, Gerald
Keller, Bernd; Ibbetson, James; Tarsa, Eric; Negley, Gerald; Yuan, Thomas
Light and Energy -Daylight measurements
Light and Energy - Daylight measurements #12;Light and Energy - Daylight measurements Authors: Jens;3 Title Light and Energy Subtitle Daylight measurements Authors Jens Christoffersen, Ásta Logadóttir ........................................................................................................ 5 Daylight quantity
Energy Conservation in Industrial Lighting
In order to reduce energy use in lighting Union Carbide recently issued drastically reduced new lighting level standards. A computerized lighting cost program was also developed. Using this program a number of additional energy saving techniques...
Meharg, E.
Lighting and the Bottom Line
A discussion of the cost of light and how it relates to the cost of people. The new Illuminating Engineering Society recommended method of determining lighting levels will be explained. Also several ways of providing good lighting to increase...
Christensen, M.
Light diffusing fiber optic chamber
A light diffusion system for transmitting light to a target area. The light is transmitted in a direction from a proximal end to a distal end by an optical fiber. A diffusing chamber is operatively connected to the optical fiber for transmitting the light from the proximal end to the distal end and transmitting said light to said target area. A plug is operatively connected to the diffusing chamber for increasing the light that is transmitted to the target area.
Maitland, Duncan J. (Lafayette, CA)
July 18, 2012 Using QECBs for Street Lighting Upgrades
lighting technologies (e.g. light-emitting diodes, induction lighting) can reduce street light energy
Efficiency Maine Residential Lighting Program
Efficiency Maine's Residential Lighting Program works directly with retailers and manufacturers to encourage residential customers to purchase energy-efficient lighting. Rebate amounts average $1...
Optical Manipulation of Light Scattering in Cold Atomic Rubidium
A brief perspective on light scattering in dense and cold atomic rubidium is presented. We particularly focus on the influence of auxiliary applied fields on the system response to a weak and nearly resonant probe field. Auxiliary fields can strongly disturb light propagation; in addition to the steady state case, dynamically interesting effects appear clearly in both the time domain, and in the optical polarization dependence of the processes. Following a general introduction, two examples of features found in such studies are presented. These include nonlinear optical effects in (a) comparative studies of forward- and fluorescence-configuration scattering under combined excitation of a control and probe field, and (b) manipulation of the spatial structure of the optical response due to a light shifting strong applied field.
R. G. Olave; A. L. Win; Kasie Kemp; S. J. Roof; S. Balik; M. D. Havey; I. M. Sokolov; D. V. Kupriyanov
Gravitational red-shift and deflection of slow light
We explore the nature of the classical propagation of light through media with strong frequency-dependent dispersion in the presence of a gravitational field. In the weak field limit, gravity causes a redshift of the optical frequency, which the slow-light medium converts into a spatially-varying index of refraction. This results in the bending of a light ray in the medium. We further propose experimental techniques to amplify and detect the phenomenon using weak value measurements. Independent heuristic and rigorous derivations of this effect are given.
J. Dressel; S. G. Rajeev; J. C. Howell; A. N. Jordan
Generation and manipulation of nonclassical light using photonic crystals
Photonic crystal cavities can localize light into nanoscale volumes with high quality factors. This permits a strong interaction between light and matter, which is important for the construction of classical light sources with improved properties (e.g., low threshold lasers) and of nonclassical light sources (such as single and entangled photon sources) that are crucial pieces of hardware of quantum information processing systems. This article will review some of our recent experimental and theoretical results on the interaction between single quantum dots and photonic crystal cavity fields, and on the integration of multiple photonic crystal devices into functional circuits for quantum information processing.
Jelena Vuckovic; Dirk Englund; David Fattal; Edo Waks; Yoshihisa Yamamoto
1 Lighting affects appearance #12;2 LightSource emits photons Photons travel in a straight line). And then some reach the eye/camera. #12;3 Basic fact: Light is linear Double intensity of sources, double photons reaching eye. Turn on two lights, and photons reaching eye are same as sum of number when each
ECE 466: LED Lighting Systems -Incandescent lightings rise and
versus cost - Power Electronic Drives for CFL and LED light sources to achieve dimmable operation - Basic electric AC and DC circuits at Sophomore level or equivalents Absolutes Lighting System Requirements index as a metric of a light source - Power Electronic Energy sources driving light sources in a compact
Schumacher, Russ
Lighting and Surfaces 11.1 Introduction to Lighting
-object-at-a-time. "Intrinsic" light is the light emitted by the object itself, such as the glow from a TV screen, a light-emitting diode, or a star. "Ambient" light is an illumination that seems to come from all sides. In the real
Boyd, John P.
Sandia National Laboratories: White Light Creation Architectures
TechnologiesWhite Light Creation Architectures White Light Creation Architectures Overview of SSL White Light Creation Architectures The entire spectral range of visible light can...
Pupillary efficient lighting system
A lighting system having at least two independent lighting subsystems each with a different ratio of scotopic illumination to photopic illumination. The radiant energy in the visible region of the spectrum of the lighting subsystems can be adjusted relative to each other so that the total scotopic illumination of the combined system and the total photopic illumination of the combined system can be varied independently. The dilation or contraction of the pupil of an eye is controlled by the level of scotopic illumination and because the scotopic and photopic illumination can be separately controlled, the system allows the pupil size to be varied independently of the level of photopic illumination. Hence, the vision process can be improved for a given level of photopic illumination.
Berman, Samuel M. (San Francisco, CA); Jewett, Don L. (Mill Valley, CA)
Light harvesting arrays
A light harvesting array useful for the manufacture of devices such as solar cells comprises: (a) a first substrate comprising a first electrode; and (b) a layer of light harvesting rods electrically coupled to the first electrode, each of the light harvesting rods comprising a polymer of Formula I: X.sup.1.paren open-st.X.sup.m+1).sub.m (I) wherein m is at least 1, and may be from two, three or four to 20 or more; X.sup.1 is a charge separation group (and preferably a porphyrinic macrocycle, which may be one ligand of a double-decker sandwich compound) having an excited-state of energy equal to or lower than that of X.sup.2, and X.sup.2 through X.sup.m+1 are chromophores (and again are preferably porphyrinic macrocycles).
Lindsey, Jonathan S. (Raleigh, NC)
Light emitting ceramic device
A light-emitting ceramic based panel, hereafter termed "electroceramescent" panel, is herein claimed. The electroceramescent panel is formed on a substrate providing mechanical support as well as serving as the base electrode for the device. One or more semiconductive ceramic layers directly overlay the substrate, and electrical conductivity and ionic diffusion are controlled. Light emitting regions overlay the semiconductive ceramic layers, and said regions consist sequentially of a layer of a ceramic insulation layer and an electroluminescent layer, comprised of doped phosphors or the equivalent. One or more conductive top electrode layers having optically transmissive areas overlay the light emitting regions, and a multi-layered top barrier cover comprising one or more optically transmissive non-combustible insulation layers overlay said top electrode regions.
Valentine, Paul; Edwards, Doreen D.; Walker, Jr., William John; Slack, Lyle H.; Brown, Wayne Douglas; Osborne, Cathy; Norton, Michael; Begley, Richard
Near Field Magneto-Optical Microscope
A device and method for mapping magnetic fields of a sample at a resolution less than the wavelength of light without altering the magnetic field of the sample is disclosed. A device having a tapered end portion with a magneto-optically active particle positioned at the distal end thereof in communication with a fiber optic for transferring incoming linearly polarized light from a source thereof to the particle and for transferring reflected light from the particle is provided. The fiber optic has a reflective material trapping light within the fiber optic and in communication with a light detector for determining the polarization of light reflected from the particle as a function of the strength and direction of the magnetic field of the sample. Linearly polarized light from the source thereof transferred to the particle positioned proximate the sample is affected by the magnetic field of the sample sensed by the particle such that the difference in polarization of light entering and leaving the particle is due to the magnetic field of the sample. Relative movement between the particle and sample enables mapping.
Vlasko-Vlasov, Vitalii K. (Downers Grove, IL); Welp, Ulrich (Lisle, IL); Crabtree, George W. (Chicago, IL)
Near-Field Magneto-Optical Microscope
Vlasko-Vlasov, Vitalii; Welp, Ulrich; and Crabtree, George W.
Radioluminescent lighting technology
The glow-in-the-dark stereotype that characterizes the popular image of nuclear materials is not accidental. When the French scientist, Henri Becquerel, first discovered radioactivity in 1896, he was interested in luminescence. Radioluminescence, the production of light from a mixture of energetic and passive materials, is probably the oldest practical application of the unstable nucleus. Tritium-based radioluminescent lighting, in spite of the biologically favorable character of the gaseous tritium isotope, was included in the general tightening of environmental and safety regulations. Tritium light manufacturers would have to meet two fundamental conditions: (1) The benefit clearly outweighed the risk, to the extent that even the perceived risk of a skeptical public would be overcome. (2) The need was significant enough that the customer/user would be willing and able to afford the cost of regulation that was imposed both in the manufacture, use and eventual disposal of nuclear materials. In 1981, researchers at Oak Ridge National Laboratory were investigating larger radioluminescent applications using byproduct nuclear material such as krypton-85, as well as tritium. By 1982, it appeared that large source, (100 Curies or more) tritium gas tube, lights might be useful for marking runways and drop zones for military operations and perhaps even special civilian aviation applications. The successful development of this idea depended on making the light bright enough and demonstrating that large gas tube sources could be used and maintained safely in the environment. This successful DOE program is now in the process of being completed and closed-out. Working closely with the tritium light industry, State governments and other Federal agencies, the basic program goals have been achieved. This is a detailed report of what they have learned, proven, and discovered. 91 refs., 29 figs., 5 tabs. (JF)
Not Available
MANDATORY MEASURES INDOOR LIGHTING CONTROLS (Reference: Sub-Chapter 4, Section 130.1) #12;SECTION 4 MANDATORY LIGHTING CONTROLS 1. 130.1 (a) Area Controls: Manual controls that control lighting in each area separately 2. 130.1 (b) Multi-level Controls: Allow occupants to choose the appropriate light level for each
California at Davis, University of
MANDATORY MEASURES INDOOR LIGHTING CONTROLS (Reference: Sub-Chapter 4, Section 130.1) #12;SECTION 3 MANDATORY LIGHTING CONTROLS 1. 130.1 (a) Area Controls: Manual controls that control lighting in each area separately 2. 130.1 (b) Multi-level Controls: "Dimmability." Allow occupants to choose the appropriate light
LIGHTING 101 1. Common terminology
SECTION 3 LIGHTING 101 1. Common terminology 2. Sources & luminaires 3. Controls #12;SECTION 3SECTION 3 DISCUSSION: COMMON LIGHTING TERMINOLOGY 1. What are the definitions of the following lighting terms? 2. Do you use these terms in professional practice? 3. What other lighting terminology do you use
MANDATORY MEASURES INDOOR LIGHTING CONTROLS (Reference: Sub-Chapter 4, Section 130.1) #12;SECTION 5 MANDATORY LIGHTING CONTROLS 1. Area Controls: Manual controls that control lighting in each area separately 2. Multi-level Controls: Allow occupants to choose the appropriate light level for each area 3. Shut
LIGHTING 101 1. Common terminology 2. Sources and luminaires 3. Controls #12;SECTION 2 DISCUSSION: COMMON LIGHTING TERMINOLOGY 1. What are the definitions of the following lighting terms? 2. Do you use these terms in professional practice? 3. What other lighting terminology do you use on the job? SLIDE 14
Bar Mar field Point field
Bone Spring Seay Nance Regional Study (Cimarex Energy) West Texas (Various Counties) West Texas Yates Seay Nance Regional Study (Lynx Production) West Texas (Various Counties) #12;Bar Mar field Umbrella Point field Nuare field East Texas field Copano Bay Bar Mar field Umbrella
Texas at Austin, University of
Solid-State Lighting on a Shoestring Budget: The Economics of Off-Grid Lighting for Small Businesses in Kenya
superior lighting services to low income people in off-grid areas of developing countries, many of whom currently rely on fuel based lighting sources such as kerosene. If this potential is to be achieved in the near term, however, manufacturers must produce off-grid lighting products that are inexpensive, perform well, and meet the needs of potential end users. At present, relatively few products meet all three of these goals. In this article, we report results from a detailed study of lighting use by micro-enterprises in two small towns in Kenya's Rift Valley Province. The work included a survey about lighting use by 50 small businesses, careful measurements of kerosene lighting use patterns and associated costs for 23 of these businesses, and a subsequent field trial in which 14 of the 23 businesses purchased and used low cost LED lamps over a number of months.
Radecsky, Kristen; Johnstone, Peter; Jacobson, Arne; Mills, Evan
Study of Light Scalars, the learned Lessons
Attention is paid to the production mechanisms of the light scalars that reveal their nature. In the linear sigma model it is revealed the chiral shielding of the \\sigma(600) meson and shown that the \\sigma field is described by its four-quark component. The \\pi\\pi scattering amplitude is constructed taking into account the \\sigma(600) and f_0(980) mesons, the chiral shielding of \\sigma (600), the \\sigma(600)-f_0(980) mixing, and results, obtained on the base of the chiral expansion and the Roy equations. The data agree with the four-quark nature of \\sigma (600) and f_0(980). It is shown, that the kaon loop mechanism of the $\\phi$ radiative decays into the light scalar mesons, which is ratified by experiment, is the four-quark transition and points to the four-quark nature of the light scalars. It is shown also, that the light scalars are produced in the two photon collisions via four-quark transitions in contrast to the classic P wave tensor q\\bar q mesons, which are produced via two-quark transitions \\gamma\\gamma\\to q\\bar q, that points to the four-quark nature of the light scalar mesons, too. A programme of further investigations is laid down.
N. N. Achasov
Variable Light-Cone Theory of Gravity
We show how to reformulate Variable Speed of Light Theories (VSLT) in a covariant fashion as Variable Light-Cone Theories (VLCT) by introducing two vierbein bundles each associated with a distinct metric. The basic gravitational action relates to one bundle while matter propagates relative to the other in a conventional way. The variability of the speed of light is represented by the variability of the matter light-cone relative to the gravitational light-cone. The two bundles are related locally by an element M, of SL(4,R). The dynamics of the field M is that of a SL(4,R)-sigma model gauged with respect to local (orthochronous) Lorentz transformations on each of the bundles. Only the ``massless'' version of the model with a single new coupling, F, that has the same dimensions as Newton's constant $G_N$, is considered in this paper. When F vanishes the theory reduces to standard General Relativity. We verify that the modified Bianchi identities of the model are consistent with the standard conservation law for the matter energy-momentum tensor in its own background metric. The implications of the model for some simple applications are examined, the Newtonian limit, the flat FRW universe and the spherically symmetric static solution.
I. T. Drummond
Kelli Pawelko is the UC Scholar-Athlete of the Month for September Kelli Pawelko, defender on the women's soccer team and a secondary education student in
Kelli Pawelko is the UC Scholar-Athlete of the Month for September Kelli Pawelko, defender a lot of pride" Kelli Pawelko, a senior on the UC Women's Soccer team is making her mark. Originally from Lemont, Illinois, a suburb of Chicago, Kelli started her soccer career at Lemont High School where
Papautsky, Ian
QCD and Light-Front Dynamics
AdS/QCD, the correspondence between theories in a dilaton-modified five-dimensional anti-de Sitter space and confining field theories in physical space-time, provides a remarkable semiclassical model for hadron physics. Light-front holography allows hadronic amplitudes in the AdS fifth dimension to be mapped to frame-independent light-front wavefunctions of hadrons in physical space-time. The result is a single-variable light-front Schroedinger equation which determines the eigenspectrum and the light-front wavefunctions of hadrons for general spin and orbital angular momentum. The coordinate z in AdS space is uniquely identified with a Lorentz-invariant coordinate {zeta} which measures the separation of the constituents within a hadron at equal light-front time and determines the off-shell dynamics of the bound state wavefunctions as a function of the invariant mass of the constituents. The hadron eigenstates generally have components with different orbital angular momentum; e.g., the proton eigenstate in AdS/QCD with massless quarks has L = 0 and L = 1 light-front Fock components with equal probability. Higher Fock states with extra quark-anti quark pairs also arise. The soft-wall model also predicts the form of the nonperturbative effective coupling and its {beta}-function. The AdS/QCD model can be systematically improved by using its complete orthonormal solutions to diagonalize the full QCD light-front Hamiltonian or by applying the Lippmann-Schwinger method to systematically include QCD interaction terms. Some novel features of QCD are discussed, including the consequences of confinement for quark and gluon condensates. A method for computing the hadronization of quark and gluon jets at the amplitude level is outlined.
Brodsky, Stanley J.; de Teramond, Guy F.; /SLAC /Southern Denmark U., CP3-Origins /Costa Rica U.
Characterization of Gatewell Orifice Lighting at the Bonneville Dam Second Powerhouse and Compendium of Research on Light Guidance with Juvenile Salmonids
The goal of the study described in this report is to provide U.S. Army Corps of Engineers (USACE) biologists and engineers with general design guidelines for using artificial lighting to enhance the passage of juvenile salmonids into the collection channel at the Bonneville Dam second powerhouse (B2). During fall 2007, Pacific Northwest National Laboratory (PNNL) researchers measured light levels in the field at one powerhouse orifice through which fish must pass to reach the collection channel. Two light types were evaluated�light-emitting diode (LED) lights and halogen spot lights. Additional measurements with mercury lamps were made at the PNNL Aquatic Research Laboratory to determine baseline intensity of the current lighting. A separate chapter synthesizes the relevant literature related to light and fish guidance for both field and laboratory studies. PNNL will also review the Corps plans for existing lighting protocol at all of the Portland District projects and help develop a uniform lighting scheme which could be implemented. The specific objectives for this study are to 1. Create a synthesis report of existing lighting data for juvenile salmonid attraction and deterrence and how the data are used at fish bypass facilities. 2. Evaluate current B2 orifice lighting conditions with both LED and halogen sources. 3. Make recommendations as to what lighting intensity, source, and configuration would improve passage at the B2 orifices. 4. Review USACE plans for retrofit of existing systems (to be assessed at a later date).
Mueller, Robert P.; Simmons, Mary Ann
Windows and lighting program
More than 30% of all energy use in buildings is attributable to two sources: windows and lighting. Together they account for annual consumer energy expenditures of more than $50 billion. Each affects not only energy use by other major building systems, but also comfort and productivity -- factors that influence building economics far more than does direct energy consumption alone. Windows play a unique role in the building envelope, physically separating the conditioned space from the world outside without sacrificing vital visual contact. Throughout the indoor environment, lighting systems facilitate a variety of tasks associated with a wide range of visual requirements while defining the luminous qualities of the indoor environment. Windows and lighting are thus essential components of any comprehensive building science program. Despite important achievements in reducing building energy consumption over the past decade, significant additional savings are still possible. These will come from two complementary strategies: (1) improve building designs so that they effectively apply existing technologies and extend the market penetration of these technologies; and (2) develop advanced technologies that increase the savings potential of each application. Both the Windows and Daylighting Group and the Lighting System Research Group have made substantial contributions in each of these areas, and continue to do so through the ongoing research summarized here. 23 refs., 16 figs.
Radioluminescent polymer lights
The preparation of radioluminescent light sources where the tritium is located on the aryl-ring in a polymer has been demonstrated with deuterium/tritium substitution. This report discusses tests, results, and future applications of radioluminescent polymers. 10 refs. (FI)
Jensen, G.A.; Nelson, D.A.; Molton, P.M.
Sweetness and light�
1. Sweetness and Light. A novel. Judi lives in a nice, clean house with her seventeen year old stepson, who won�t talk to her in anything but monosyllables. His father, Nelson, and she are struggling to relate to each ...
Craig, Katie
Nonequilibrium lighting plasmas
In this paper the science of a variety of devices employing nonequilibrium lighting plasmas is reviewed. The devices include the fluorescent lamp, the low-pressure sodium lamp, the neon sign, ultraviolet lamps, glow indicators, and a variety of devices used by spectroscopists, such as the hollow cathode light source. The plasma conditions in representative commercial devices are described. Recent research on the electron gas, the role of heavy particles, spatial and temporal inhomogeneities, and new electrodeless excitation schemes is reviewed. Areas of future activity are expected to be in new applications of high-frequency electronics to commercial devices, new laser-based diagnostics of plasma conditions, and more sophisticated models requiring more reliable and extensive rate coefficient data.
Dakin, J.T. (GE Lighting, Nela Park, Cleveland, OH (US))
Light cone matrix product
We show how to combine the light-cone and matrix product algorithms to simulate quantum systems far from equilibrium for long times. For the case of the XXZ spin chain at {Delta} = 0.5, we simulate to a time of {approx} 22.5. While part of the long simulation time is due to the use of the light-cone method, we also describe a modification of the infinite time-evolving bond decimation algorithm with improved numerical stability, and we describe how to incorporate symmetry into this algorithm. While statistical sampling error means that we are not yet able to make a definite statement, the behavior of the simulation at long times indicates the appearance of either 'revivals' in the order parameter as predicted by Hastings and Levitov (e-print arXiv:0806.4283) or of a distinct shoulder in the decay of the order parameter.
Hastings, Matthew B [Los Alamos National Laboratory
The goal of this program was to reduce the long term technical risks that were keeping the lighting industry from embracing and developing organic light-emitting diode (OLED) technology for general illumination. The specific goal was to develop OLEDs for lighting to the point where it was possible to demonstrate a large area white light panel with brightness and light quality comparable to a fluorescence source and with an efficacy comparable to that of an incandescent source. it was recognized that achieving this would require significant advances in three area: (1) the improvement of white light quality for illumination, (2) the improvement of OLED energy efficiency at high brightness, and (3) the development of cost-effective large area fabrication techniques. The program was organized such that, each year, a ''deliverable'' device would be fabricated which demonstrated progress in one or more of the three critical research areas. In the first year (2001), effort concentrated on developing an OLED capable of generating high illumination-quality white light. Ultimately, a down-conversion method where a blue OLED was coupled with various down-conversion layers was chosen. Various color and scattering models were developed to aid in material development and device optimization. The first year utilized this approach to deliver a 1 inch x 1 inch OLED with higher illumination-quality than available fluorescent sources. A picture of this device is shown and performance metrics are listed. To their knowledge, this was the first demonstration of true illumination-quality light from an OLED. During the second year, effort concentrated on developing a scalable approach to large area devices. A novel device architecture consisting of dividing the device area into smaller elements that are monolithically connected in series was developed. In the course of this development, it was realized that, in addition to being scalable, this approach made the device tolerant to the most common OLED defect--electrical shorts. This architecture enabled the fabrication of a 6 inch x 6 inch OLED deliverable for 2002. A picture of this deliverable is shown and the performance metrics are listed. At the time, this was the highest efficiency, highest lumen output illumination-quality OLED in existence. The third year effort concentrated on improving the fabrication yield of the 6 inch x 6 inch devices and improving the underlying blue device efficiency. An efficiency breakthrough was achieved through the invention of a new device structure such that now 15 lumen per watt devices could be fabricated. A 2 feet x 2 feet OLED panel consisting of sixteen 6 inch x 6 inch high efficiency devices tiled together was then fabricated. Pictures of this panel are shown with performance metrics listed. This panel met all project objectives and was the final deliverable for the project. It is now the highest efficiency, highest lumen output, illumination-quality OLED in existence.
Anil Duggal; Don Foust; Chris Heller; Bill Nealon; Larry Turner; Joe Shiang; Nick Baynes; Tim Butler; Nalin Patel
Fusion pumped light source
Apparatus is provided for generating energy in the form of light radiation. A fusion reactor is provided for generating a long, or continuous, pulse of high-energy neutrons. The neutron flux is coupled directly with the lasing medium. The lasing medium includes a first component selected from Group O of the periodic table of the elements and having a high inelastic scattering cross section. Gamma radiation from the inelastic scattering reactions interacts with the first component to excite the first component, which decays by photon emission at a first output wavelength. The first output wavelength may be shifted to a second output wavelength using a second liquid component responsive to the first output wavelength. The light outputs may be converted to a coherent laser output by incorporating conventional optics adjacent the laser medium.
Pappas, Daniel S. (Los Alamos, NM)
Evaluation of Methods to Increase Light under Large Overwater Structures
To address resource agency concerns about potential impacts of ferry terminal expansion on habitat functions and resource use of nearshore areas, the Pacific Northwest National Laboratory, in partnership with the Washington State Department of Transportation, conducted field trials with several products that promote light passage through dock structures. Photosynthetically active radiation (PAR) measurements were compared with known minimum requirements for survival of eelgrass, Zostera marina, which provides critical habitat for the federally listed chinook salmon, Oncorhynchus tshawytscha. PAR measurements were also related to what is known about the effects of light on juvenile salmonid feeding and passage under overwater structures. In general, the products predicted to provide the most to the least light were the grating, SunTunnel, metal halide greenhouse light, and prisms. All the light technologies tested could provide enough light for eelgrass underneath a ferry terminal, though multiples of some devices would be required. Because less light is required for fish to feed than for photosynthesis, any of the products would provide enough light for juvenile salmon to feed under the structure. The number and placement of these devices could be arranged to maximize light penetration for particular purposes in different situations.
Sargeant, Susan L.; Thom, Ronald M.; Diefenderfer, Heida L.; Borde, Amy B.; Southard, John A.
Turbo-Charged Lighting Design
TURBO-CHARGED LIGHTING DESIGN William H. Clark II Design Engineer O'Connell Robertson & Assoc Austin/ Texas ABSTRACT The task of the lighting designer has become very complex, involving thousands of choices for fixture types and hundreds...
Clark, W. H. II
Quantum Field Theory in Graphene
This is a short non-technical introduction to applications of the Quantum Field Theory methods to graphene. We derive the Dirac model from the tight binding model and describe calculations of the polarization operator (conductivity). Later on, we use this quantity to describe the Quantum Hall Effect, light absorption by graphene, the Faraday effect, and the Casimir interaction.
I. V. Fialkovsky; D. V. Vassilevich
Faster than Light Quantum Communication
Faster than light communication might be possible using the collapse of the quantum wave-function without any accompanying paradoxes.
A. Y. Shiekh
Webinar: Fuel Cell Mobile Lighting
Video recording of the Fuel Cell Technologies Office webinar, Fuel Cell Mobile Lighting, originally presented on November 13, 2012.
Photodetector with enhanced light absorption
A photodetector including a light transmissive electrically conducting layer having a textured surface with a semiconductor body thereon. This layer traps incident light thereby enhancing the absorption of light by the semiconductor body. A photodetector comprising a textured light transmissive electrically conducting layer of SnO.sub.2 and a body of hydrogenated amorphous silicon has a conversion efficiency about fifty percent greater than that of comparative cells. The invention also includes a method of fabricating the photodetector of the invention.
Kane, James (Lawrenceville, NJ)
Renormalized Light Front Hamiltonian in the Pauli-Villars Regularization
We address the problem of nonperturbative calculations on the light front in quantum field theory regularized by Pauli-Villars method. As a preliminary step we construct light front Hamiltonians in (2+1)-dimensional $\\lambda\\phi^4$ model, for the cases without and with spontaneous symmetry breaking. The renormalization of these Hamiltonians in Pauli-Villars regularization is carried out via comparison of all-order perturbation theory, generated by these Hamiltonians, and the corresponding covariant perturbation theory in Lorentz coordinates.
M. Yu. Malyshev; S. A. Paston; E. V. Prokhvatilov; R. A. Zubov
Light-Front Holographic QCD
The relation between the hadronic short-distance constituent quark and gluon particle limit and the long-range confining domain is yet one of the most challenging aspects of particle physics due to the strong coupling nature of Quantum Chromodynamics, the fundamental theory of the strong interactions. The central question is how one can compute hadronic properties from first principles; i.e., directly from the QCD Lagrangian. The most successful theoretical approach thus far has been to quantize QCD on discrete lattices in Euclidean space-time. Lattice numerical results follow from computation of frame-dependent moments of distributions in Euclidean space and dynamical observables in Minkowski spacetime, such as the time-like hadronic form factors, are not amenable to Euclidean lattice computations. The Dyson-Schwinger methods have led to many important insights, such as the infrared fixed point behavior of the strong coupling constant, but in practice, the analyses are limited to ladder approximation in Landau gauge. Baryon spectroscopy and the excitation dynamics of nucleon resonances encoded in the nucleon transition form factors can provide fundamental insight into the strong-coupling dynamics of QCD. New theoretical tools are thus of primary interest for the interpretation of the results expected at the new mass scale and kinematic regions accessible to the JLab 12 GeV Upgrade Project. The AdS/CFT correspondence between gravity or string theory on a higher-dimensional anti-de Sitter (AdS) space and conformal field theories in physical space-time has led to a semiclassical approximation for strongly-coupled QCD, which provides physical insights into its nonperturbative dynamics. The correspondence is holographic in the sense that it determines a duality between theories in different number of space-time dimensions. This geometric approach leads in fact to a simple analytical and phenomenologically compelling nonperturbative approximation to the full light-front QCD Hamiltonian 'Light-Front Holography'. Light-Front Holography is in fact one of the most remarkable features of the AdS/CFT correspondence. The Hamiltonian equation of motion in the light-front (LF) is frame independent and has a structure similar to eigenmode equations in AdS space. This makes a direct connection of QCD with AdS/CFT methods possible. Remarkably, the AdS equations correspond to the kinetic energy terms of the partons inside a hadron, whereas the interaction terms build confinement and correspond to the truncation of AdS space in an effective dual gravity approximation. One can also study the gauge/gravity duality starting from the bound-state structure of hadrons in QCD quantized in the light-front. The LF Lorentz-invariant Hamiltonian equation for the relativistic bound-state system is P{sub {mu}}P{sup {mu}}|{psi}(P)> = (P{sup +}P{sup -} - P{sub {perpendicular}}{sup 2})|{psi}(P)> = M{sup 2}|{psi}(P)>, P{sup {+-}} = P{sup 0} {+-} P{sup 3}, where the LF time evolution operator P{sup -} is determined canonically from the QCD Lagrangian. To a first semiclassical approximation, where quantum loops and quark masses are not included, this leads to a LF Hamiltonian equation which describes the bound-state dynamics of light hadrons in terms of an invariant impact variable {zeta} which measures the separation of the partons within the hadron at equal light-front time {tau} = x{sup 0} + x{sup 3}. This allows us to identify the holographic variable z in AdS space with an impact variable {zeta}. The resulting Lorentz-invariant Schroedinger equation for general spin incorporates color confinement and is systematically improvable. Light-front holographic methods were originally introduced by matching the electromagnetic current matrix elements in AdS space with the corresponding expression using LF theory in physical space time. It was also shown that one obtains identical holographic mapping using the matrix elements of the energy-momentum tensor by perturbing the AdS metric around its static solution. A gravity dual to QCD is not known, but th
Brodsky, Stanley J.; /SLAC /Southern Denmark U., CP3-Origins; de Teramond, Guy F.; /Costa Rica U.
MANDATORY MEASURES OUTDOOR LIGHTING CONTROLS (Reference: Sub-Chapter 4, Section 130.2) #12;SECTION level of each multi-tier garage. · General lighting must have occupant sensing controls with at least one control step between 20% and 50% of design lighting power · No more than 500 watts of rated
MANDATORY MEASURES OUTDOOR LIGHTING CONTROLS (Reference: Sub-Chapter 4, Section 130.2) #12;SECTION 5 Additions and Alterations Any alteration that increases the connected lighting load must meet all No measures required OUTDOOR LIGHTING11/20/2014 #12;SECTION 5 BACKLIGHT, UPLIGHT, AND GLARE (BUG) RATINGS
MANDATORY MEASURES OUTDOOR LIGHTING CONTROLS (Reference: Sub-Chapter 4, Section 130.2) #12;SECTION performance in relation to lighting trespass, sky glow, and high angle brightness. This is necessary in order to reduce light pollution, which has a negative effect on wildlife and the surrounding environments
Arnold Schwarzenegger, LIGHTING RESEARCH PROGRAM
;#12;Prepared By: Lighting Research Center Andrew Bierman, Project Lead Troy, New York 12180 Managed ByArnold Schwarzenegger, Governor LIGHTING RESEARCH PROGRAM PROJECT 3.2 ENERGY EFFICIENT LOAD- SHEDDING LIGHTING TECHNOLOGY Prepared For: California Energy Commission Public Interest Energy Research
STATE OF CALIFORNIA RESIDENTIAL LIGHTING CEC-CF-6R-LTG-01 (Revised 08/09) CALIFORNIA ENERGY COMMISSION INSTALLATION CERTIFICATE CF-6R-LTG-01 Residential Lighting (Page 1 of 6) Site Address: Enforcement Agency: Permit Number: 2008 Residential Compliance Forms August 2009 1. Kitchen Lighting Does project
Ultrastrong light-matter coupling in electrically doped microcavity organic light emitting diodes
The coupling of the electromagnetic field with an electronic transition gives rise, for strong enough light-matter interactions, to hybrid states called exciton-polaritons. When the energy exchanged between light and matter becomes a significant fraction of the material transition energy an extreme optical regime called ultrastrong coupling (USC) is achieved. We report a microcavity embedded p-i-n monolithic organic light emitting diode working in USC, employing a thin film of squaraine dye as active layer. A normalized coupling ratio of 30% has been achieved at room temperature. These USC devices exhibit a dispersion-less angle-resolved electroluminescence that can be exploited for the realization of innovative optoelectronic devices. Our results may open the way towards electrically pumped polariton lasers.
Mazzeo, M., E-mail: firstname.lastname@example.com [Dipartimento di Matematica e Fisica �Ennio De Giorgi�, Universit� del Salento, Via Monteroni, 73100 Lecce (Italy); NNL, Istituto Nanoscienze - CNR, Via Arnesano, 73100 Lecce (Italy); Genco, A. [Dipartimento di Matematica e Fisica �Ennio De Giorgi�, Universit� del Salento, Via Monteroni, 73100 Lecce (Italy); Gambino, S. [NNL, Istituto Nanoscienze - CNR, Via Arnesano, 73100 Lecce (Italy); CBN, Istituto Italiano Tecnologia, Via Barsanti 1, 73010 Lecce (Italy); Ballarini, D.; Mangione, F.; Sanvitto, D. [NNL, Istituto Nanoscienze - CNR, Via Arnesano, 73100 Lecce (Italy); Di Stefano, O.; Patan�, S.; Savasta, S. [Dipartimento di Fisica e Scienze della Terra, Universit� di Messina, Viale F. Stagno d'Alcontres 31, 98166 Messina (Italy); Gigli, G. [Dipartimento di Matematica e Fisica �Ennio De Giorgi�, Universit� del Salento, Via Monteroni, 73100 Lecce (Italy); NNL, Istituto Nanoscienze - CNR, Via Arnesano, 73100 Lecce (Italy); CBN, Istituto Italiano Tecnologia, Via Barsanti 1, 73010 Lecce (Italy)
Controlling X-rays With Light
Ultrafast x-ray science is an exciting frontier that promises the visualization of electronic, atomic and molecular dynamics on atomic time and length scales. A largelyunexplored area of ultrafast x-ray science is the use of light to control how x-rays interact with matter. In order to extend control concepts established for long wavelengthprobes to the x-ray regime, the optical control field must drive a coherent electronic response on a timescale comparable to femtosecond core-hole lifetimes. An intense field is required to achieve this rapid response. Here an intense optical control pulse isobserved to efficiently modulate photoelectric absorption for x-rays and to create an ultrafast transparency window. We demonstrate an application of x-ray transparencyrelevant to ultrafast x-ray sources: an all-photonic temporal cross-correlation measurement of a femtosecond x-ray pulse. The ability to control x-ray/matterinteractions with light will create new opportunities at current and next-generation x-ray light sources.
Glover, Ernie; Hertlein, Marcus; Southworth, Steve; Allison, Tom; van Tilborg, Jeroen; Kanter, Elliot; Krassig, B.; Varma, H.; Rude, Bruce; Santra, Robin; Belkacem, Ali; Young, Linda
Light field moment imaging Antony Orth1,2
[1]. A method termed "shape from focus" extracts depth information from a focal stack of a scene [5,6], LMI makes no assumption as to the opacity of objects in the scene. LMI is therefore capable
MHK Projects/Malone Field Light Project | Open Energy Information
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth's Heat JumpIncMAK Technologies JumpLuangwa Zambia Project
Field deployable dynamic lighting system for turbid water imaging
The ocean depths provide an ever changing and complex imaging environment. As scientists and researches strive to document and study more remote and optically challenging areas, specifically scatter-limited environments. ...
Gorman, Geoffrey Allen
EECBG Success Story: North Carolina Playing Fields Score Brighter Lights |
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-UpHeat Pump Models |Conduct,Final9: DraftPlant,Community'IntoEnergy
North Carolina Playing Fields Score Brighter Lights | Department of Energy
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion | Department ofT ib l L d F S iPartnership ProgramDepartment ofCatalystsCarolina Playing
New results in atomic physics at the Advanced Light Source
The Advanced Light Source is the world's first low-energy third-generation synchrotron radiation source. It has been running reliably and exceeding design specifications since it began operation in October 1993. It is available to a wide community of researchers in many scientific fields, including atomic and molecular science and chemistry. Here, new results in atomic physics at the Advanced Light Source demonstrate the opportunities available in atomic and molecular physics at this synchrotron light source. The unprecedented brightness allows experiments with high flux, high spectral resolution, and nearly 100% linear polarization.
Schlachter, A.S.
An arrayed nanoantenna for broadband light emission and detection
We suggest a broadband optical unidirectional arrayed nanoantenna consisting of equally spaced nanorods of gradually varying length. Each nanorod can be driven by near-field quantum emitters radiating at different frequencies or, according to the reciprocity principle, by an incident light at the same frequency. Broadband unidirectional emission and reception characteristics of the nano-antenna open up novel opportunities for subwavelength light manipulation and quantum communication, as well as for enhancing the performance of photoactive devices such as photovoltaic detectors, light-emitting diodes, and solar cells.
Miroshnichenko, Andrey E; Davoyan, Arthur R; Simovski, Constantin; Belov, Pavel; Kivshar, Yuri S
Electron g-2 in Light-Front Quantization
Basis Light-front Quantization has been proposed as a nonperturbative framework for solving quantum field theory. We apply this approach to Quantum Electrodynamics and explicitly solve for the light-front wave function of a physical electron. Based on the resulting light-front wave function, we evaluate the electron anomalous magnetic moment. Nonperturbative mass renormalization is performed. Upon extrapolation to the infinite basis limit our numerical results agree with the Schwinger result obtained in perturbation theory to an accuracy of 0.06%.
Xingbo Zhao; Heli Honkanen; Pieter Maris; James P. Vary; Stanley J. Brodsky
Plasmonic light yield enhancement of a liquid scintillator
We demonstrate modifications to the light yield properties of an organic liquid scintillator due to the localization of the tertiary fluorophore component to the surface of Ag-core silica-shell nanoparticles. We attribute this enhancement to the near-field interaction of Ag nanoparticle plasmons with these fluor molecules. The scintillation light yield enhancement is shown to be equal to the fluorescence enhancement within measurement uncertainties. With a suitable choice of plasmon energy and scintillation fluor, this effect may be used to engineer scintillators with enhanced light yields for radiation detection applications.
Bignell, Lindsey J.; Jackson, Timothy W. [Australian Nuclear Science and Technology Organisation, Lucas Heights, New South Wales 2234 (Australia)] [Australian Nuclear Science and Technology Organisation, Lucas Heights, New South Wales 2234 (Australia); Mume, Eskender [Australian Nuclear Science and Technology Organisation, Lucas Heights, New South Wales 2234 (Australia) [Australian Nuclear Science and Technology Organisation, Lucas Heights, New South Wales 2234 (Australia); Center of Excellence in Anti-matter Matter Studies, Research School of Physics and Engineering, The Australian National University, Canberra (Australia); Lee, George P. [Department of Materials Engineering, Monash University, Melbourne (Australia)] [Department of Materials Engineering, Monash University, Melbourne (Australia)
Pedestrian Friendly Outdoor Lighting
This GATEWAY report discusses the problems of pedestrian lighting that occur with all technologies with a focus on the unique optical options and opportunities offered by LEDs through the findings from two pedestrian-focused projects, one at Stanford University in California, and one at the Chautauqua Institution in upstate New York. Incorporating user feedback this report reviews the tradeoffs that must be weighed among visual comfort, color, visibility, efficacy and other factors to stimulate discussion among specifiers, users, energy specialists, and in industry in hopes that new approaches, metrics, and standards can be developed to support pedestrian-focused communities, while reducing energy use.
Miller, Naomi J.; Koltai, Rita; McGowan, Terry
Advances in Lighting
colour rendition. The quartz-halogen incandescent lam s operate at higher temperatures, and have a somewhat higher efficacy, but they are rarely used except for special applicati ns. 3-2 High Intensity Discharge Lamps. Mercury is the grandfather... of the H.I.D. lamps. Its blue-green light, has been used almost exclusively for streetlighti and, often with colour-improving phospho it is still being used in industrial and commercial applications. Reactor-type ballasted mercury lamps can now...
Tumber, A. J.
Lights, Conformational Change... Action!
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: VegetationEquipment Surfaces and Interfaces Sample6, 2011 LawrenceEfeedstocksHomesLighting the
Lighting | Open Energy Information
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating Solar Powerstories on climateJuno Beach,October,Lighthouse Solar Jump to:Lighting Jump
Ecological Consequences of Artificial Night Lighting
of Artificial Night Lighting Catherine Rich and Travisof artificial night lighting. This book provides editedage of modern urban lighting was ushered in. Coincidentally,
Piselli, Kathy
REFERENCES Task Report to Lighting Systems Research,Berkeley Laboratory, "Lighting Control System Market1980). Task Report to Lighting Systems Research, Lawrence
Verderber, R.R.
Demand Responsive Lighting: A Scoping Study
3 3.0 Previous Experience with Demand Responsive Lighting11 4.3. Prevalence of Lighting13 4.4. Impact of Title 24 on Lighting
Rubinstein, Francis; Kiliccote, Sila
Municipal Consortium LED Street Lighting Workshop Presentations...
A Rational View of LM-79 Reports, IES Files, and Product Variation Gary Steinberg, GE Lighting Solutions Solid-State Street Lighting: Calculating Light Loss Factors Dana Beckwith,...
National Association of Energy Services Companies Calculating Light Loss Factors for Solid-State Lighting Systems Chad Stalker, Philips Lumileds Lighting Intro to MSSLC's...
Sandia National Laboratories: Light Creation Materials
TechnologiesLight Creation Materials Light Creation Materials Overview of SSL Light Creation Materials Different families of inorganic semiconductor materials can...
Photon echo studies of photosynthetic light harvesting
of the B800-B820 light-harvesting complex. Proc Natl Acadphotosynthetic light harvesting Elizabeth L. Read � Hohjaitransfer events in light harvesting. Here, we outline the
Read, Elizabeth L.; Lee, Hohjai; Fleming, Graham R.
EFRCOverviewLight Creation Materials Light Creation Materials Overview of SSL Light Creation Materials Different families of inorganic semiconductor materials can contribute to...
DarkLight radiation backgrounds
We report measurements of photon and neutron radiation levels observed while transmitting a 0.43 MW electron beam through millimeter-sized apertures and during beam-on, but accelerating gradient RF-on, operation. These measurements were conducted at the Free-Electron Laser (FEL) facility of the Jefferson National Accelerator Laboratory (JLab) using a 100 MeV electron beam from an energy-recovery linear accelerator. The beam was directed successively through 6 mm, 4 mm, and 2 mm diameter apertures of length 127 mm in aluminum at a maximum current of 4.3 mA (430 kW beam power). This study was conducted to characterize radiation levels for experiments that need to operate in this environment, such as the proposed DarkLight Experiment. We find that sustained transmission of a 430 kW CW beam through a 2 mm aperture is feasible with manageable beam-related backgrounds. We also find that during beam-off, RF-on operation, field emission inside the niobium cavities of the accelerator cryomodules is the primary source of ambient radiation.
Kalantarians, N. [Department of Physics, Hampton University, Hampton VA 23668 (United States); Collaboration: DarkLight Collaboration
Light superconducting strings in the Galaxy
Observations of the Milky Way by the SPI/INTEGRAL satellite have confirmed the presence of a strong 511 KeV gamma-ray line emission from the bulge, which require an intense source of positrons in the galactic center. These observations are hard to account for by conventional astrophysical scenarios, whereas other proposals, such as light DM, face stringent constraints from the diffuse gamma-ray background. Here we suggest that light superconducting strings could be the source of the observed 511 KeV emission. The associated particle physics, at the ~ 1 TeV scale, is within reach of planned accelerator experiments, while the distinguishing spatial distribution, proportional to the galactic magnetic field, could be mapped by SPI or by future, more sensitive, satellite missions.
Francesc Ferrer; Tanmay Vachaspati
Comparison of the Phenomena of Light Refraction and Gravitational Bending
The properties of light in the presence of electromagnetic and gravitational fields are compared. Once one takes account of the fact that clock rates vary with distance from a massive object, it is argued that in an absolute sense light frequencies remain constant in both interactions. It is also pointed out that the criterion used by Einstein for the angle of curvature of light rays passing close to the sun is not their actual trajectory but rather Huygens' Principle. The latter only requires that the speed of light vary with distance from a gravitational source in order to produce a measurable effect. As a result, the observed displacement of star images during solar eclipses can be explained on the basis of a rotation of the wave front of light without assuming that individual photons are actually deflected by the sun. A calculation reported by Schiff in 1960 based on the assumption that light travels in a straight line for all local observers obtains the same closed expression for the angle of displacement of star images as in Einstein's original work, in support of this interpretation. Since light is believed to follow a straight-line trajectory within any given homogeneous transparent medium, it is argued that light refraction and gravitational bending have more in common than is generally realized.
Robert J. Buenker
Evaluation of Methods to Increase Light Under Ferry Terminals
To address concerns of resource agencies about the potential impacts of ferry terminal expansion on valuable habitat functions and resource use of nearshore areas, the Pacific Northwest National Laboratory (PNNL), in partnership with the Washington State Department of Transportation (WSDOT), conducted field trials with off-the-shelf products that promote light passage through dock structures. These products included a SunTunnel, deck prisms, and a metal halide greenhouse light. Light measurements (photosynthetically active radiation, PAR) were also recorded beneath glass blocks and a metal grating installed at Clinton Ferry Terminal on Whidbey Island, WA. A review of other studies measuring the effects of dock shading and alternate dock materials was conducted. PAR measurements from this study were related to minimum requirements for eelgrass Zostera marina photosynthesis and to the known maximum photosynthetic ?saturation? rate for Z. marina. We also related PAR measurements to what we know about light effects on juvenile salmonid feeding and passage under overwater structures. Of the light technologies tested, the metal halide light, SunTunnel, glass blocks, and grating potentially provide enough light for eelgrass growth underneath a ferry terminal with similar construction to the Clinton Ferry Terminal. All of these technologies would potentially provide adequate light under conditions where eelgrass is located at its upper depth limit and a dock is close to the water surface. Light levels needed to allow fish to feed and to form schools are low (~ 1-2 mmol/m2/s), and much less than those required for photosynthesis. Our research indicates that installing any of the tested light products would likely maintain light levels under the dock above those required for active feeding by juvenile salmonids.
Blanton, Susan L.; Thom, Ronald M.; Borde, Amy B.; Diefenderfer, Heida L.; Southard, John A.
Colliding beams of light
The stationary gravitational field of two identical counter-moving beams of pure radiation is found in full generality. The solution depends on an arbitrary function and a parameter which sets the scale of the energy density. Some of its properties are studied. Previous particular solutions are derived as subcases.
B. V. Ivanov
Energy Savings Estimates of Light Emitting Diodes in Niche Lighting...
Office of Environmental Management (EM)
in Niche Lighting Applications Prepared for: Building Technologies Program Office of Energy Efficiency and Renewable Energy U.S. Department of Energy Prepared by: Navigant...
Light modulating device
In a device for transmitting light, means for controlling the transmissivity of the device, including a ceramic, reversibly electrochromic, crystalline element having a highly reflective state when injected with electrons and charge compensating ions and a highly transmissive state when the electrons and ions are removed, the crystalline element being characterized as having a reflectivity of at least 50% in the reflective state and not greater than 10% in the transmissive state, and means for modulating the crystalline element between the reflective and transmissive states by injecting ions into the crystalline element in response to an applied electrical current of a first polarity and removing the ions in response to an applied electrical current of a second polarity.
Rauh, R. David (Newton, MA); Goldner, Ronald B. (Lexington, MA)
In a device for transmitting light, means for controlling the transmissivity of the device, including a ceramic, reversibly electrochromic, crystalline element having a highly reflective state when injected with electrons and charge compensating ions and a highly transmissive state when the electrons and ions are removed, the crystalline element being characterized as having a reflectivity of at least 50% in the reflective state and not greater than 10% in the transmissive state, and means for modulating the crystalline element between the reflective and transmissive states by injecting ions into the crystalline element in response to an applied electrical current of a first polarity and removing the ions in response to an applied electrical current of a second polarity are disclosed. 1 fig.
Rauh, R.D.; Goldner, R.B.
Energy and lighting
Advances in research for new types of lighting with increased efficacies (lumens/watt) are discussed in the following areas: (1) high-frequency, solid-state ballasts, (2) isotopic enhancement of mercury isotopes, (3) magnetic augmentation, (4) electrodeless, ultra-high frequency, (5) tuned phosphors, (6) two-photon phosphors, (7) heat mirrors, and (3) advanced control circuits to take advantage of daylight and occupancy. As of 1985, improvements in efficacy have been accomplished on an economic basis to save energy for (1) high-frequency ballasts (25%), (2) isotopic enhancement (5%), and (8) advanced control circuits (up to 50%). Most of these advances depend on a deeper understanding of the weakly ionized plasma as a radiating and diffusing medium. 3 figures, 4 tables.
Berman, S.
Cost effective lighting
Long-life replacement lamps for the incandescent lamp have been evaluated with regard to their cost effectiveness. The replacements include the use of energy buttons that extend lamp life as well as an adaptive fluorescent circline lamp that will fit into existing incandescent lamp sockets. The initial, operating, and replacement costs for one million lumen-hours are determined for each lamp system. We find the most important lighting cost component is the operating cost. Using lamps that are less efficient or devices that cause lamps to operate less efficiently are not cost-effective. The adaptive fluorescent circline lamp, even at an initial cost of $15.00, is the most cost effective source of illumination compared to the incandescent lamp and lamp systems examined. 3 refs., 6 tabs.
Morse, O.; Verderber, R.
Posters | Posters --721 Exploring lighting cultures
Posters | Posters -- 721 Exploring lighting cultures Beyond light and emotions Vincent LAGANIER 1 , Jasmine van der POL 2 1. Lighting Applications Services (LiAS), Philips Lighting, France firstname.lastname@example.com 2
Creative and Constructive Play with Light
children identify objects with these properties. Predict what materials light will pass through. Use paint and mixing light. Mixing paint creates a muddy brown or black. Mixing light creates white light
Light-weight analyzer for odor recognition
The invention provides a light weight analyzer, e.g., detector, capable of locating clandestine graves. The detector utilizes the very specific and unique chemicals identified in the database of human decompositional odor. This detector, based on specific chemical compounds found relevant to human decomposition, is the next step forward in clandestine grave detection and will take the guess-work out of current methods using canines and ground-penetrating radar, which have historically been unreliable. The detector is self contained, portable and built for field use. Both visual and auditory cues are provided to the operator.
Vass, Arpad A; Wise, Marcus B
Cost-effective Lighting Retrofits: Lessons Learned
maintained 44 61 96 37 58 % 34 57 % Mean maintained % = 59% The small office room depicted below aluminum full reflector was installed with the same contained one 2'x 4' lay-in deep cell parabolic T-8 lamps. Results are presented in the graph louver... accurate wattage values in calculating predicted savings from a lighting retrofit. Published ANSI values are not an accurate approximation of real world fixture wattage. Field testing within a 2' x 4' lay-in deep cell parabolic louver fixture produced...
Fisher, M. D.
Entangled light from Bose-Einstein condensates
We propose a method to generate entangled light with a Bose-Einstein condensate trapped in a cavity, a system realized in recent experiments. The atoms of the condensate are trapped in a periodic potential generated by a cavity mode. The condensate is continuously pumped by a laser and spontaneously emits a pair of photons of different frequencies in two distinct cavity modes. In this way, the condensate mediates entanglement between two cavity modes which leak out and can be separated and exhibit continuous variable entanglement. The scheme exploits the experimentally demonstrated strong, steady and collective coupling of condensate atoms to a cavity field.
H. T. Ng; S. Bose
Follow the Light | The Ames Laboratory
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsing ZirconiaPolicyFeasibilityFieldMinds" |beamthe Light Just like watching
High efficiency SHG of orbital angular momentum light in an external cavity
Traditional methods for generating orbital angular momentum (OAM) light include holographic diffraction gratings, vortex phase plate and spatial light modulator. In this article, we report a new method for high efficient OAM light generation. By pumping an external cavity contains a quasi phase matching nonlinear crystal with a fundamental OAM carrying light and properly aligning the cavity, mode matching between the pump light and the cavitys higher order Laguerre-Gaussian (LG) mode is achieved, conversion efficiency up to 10.3 percentage have been obtained. We have demonstrated that the cavity can stably operate at its higher order LG mode just as Gaussian mode for the first time. The SHG light possesses a doubled OAM value with respect to the pump light. The parameters that affect the beam quality and conversion efficiency are discussed in detail. Our work opens a brand new field in laser optics, and makes the first step toward high efficiency OAM light processing.
Zhi-Yuan Zhou; Yan Li; Dong-Sheng Ding; Yun-Kun Jiang; Wei Zhang; Shuai Shi; Bao-Sen Shi; Guang-Can Guo
Embodied Energy and Off-Grid Lighting
as a point of comparison with LED lighting product embodieda fairer comparison between off- grid LED lighting and other
Alstone, Peter
Overcoming Common Pitfalls: Energy Efficient Lighting Projects...
Overcoming Common Pitfalls: Energy Efficient Lighting Projects Overcoming Common Pitfalls: Energy Efficient Lighting Projects Transcript Presentation More Documents & Publications...
Automatic Mechetronic Wheel Light Device
A wheel lighting device for illuminating a wheel of a vehicle to increase safety and enhance aesthetics. The device produces the appearance of a "ring of light" on a vehicle's wheels as the vehicle moves. The "ring of light" can automatically change in color and/or brightness according to a vehicle's speed, acceleration, jerk, selection of transmission gears, and/or engine speed. The device provides auxiliary indicator lights by producing light in conjunction with a vehicle's turn signals, hazard lights, alarm systems, and etc. The device comprises a combination of mechanical and electronic components and can be placed on the outer or inner surface of a wheel or made integral to a wheel or wheel cover. The device can be configured for all vehicle types, and is electrically powered by a vehicle's electrical system and/or battery.
Khan, Mohammed John Fitzgerald (Silver Spring, MD)
Utility lighting summit proves illuminating
Utility-lighting-summit-proves-illuminating Sign In About | Careers | Contact | Investors | bpa.gov Search News & Us Expand News & Us Projects & Initiatives Expand Projects...
Photonic crystal light emitting diode.
?? This master's thesis describe electromagnetic simulations of a gallium antimonide (GaSb) light emitting diode, LED. A problem for such devices is that most of� (more)
Leirset, Erlend
Linac Coherent Light Source Overview
Take an animated tour of the Linac Coherent Light Source (LCLS). Follow the laser pulse from the injector gun all the way through to the Far Experimental Hall.
Light Water Reactor Sustainability Newsletter
and nuclear waste disposal. Dr. Corradini has extensive research experience in the phenomenology of beyond design basis Meet the New LWRS Program Pathway Lead accidents in light...
LED Lighting Off the Grid
Energy Savers [EERE]
D. & Kammen, D. M. Decentralized energy systems for clean electricity access. Nature Climate Change accepted, in press, (2015). Off-Grid Status Quo : Fuel Based Lighting...
Pedestrian-Friendly Nighttime Lighting
This November 19, 2013 webinar presented issues and considerations related to pedestrian-friendly nighttime lighting, such as color rendering, safety, and adaptation. When it comes to outdoor...
hydraulics software RELAP-7 (which is under development in the Light Water Reactor Sustainability LWRS Program). A novel interaction between the probabilistic part (i.e., RAVEN)...
30-35, August 2012. Clayton, D. A. and M. S. Hileman, 2012, Light Water Reactor Sustainability Non-Destructive Evaluation for Concrete Research and Development Roadmap, ORNLTM-...
Lighting with Paint FABIO PELLACINI
Lighting with Paint FABIO PELLACINI Dartmouth College and FRANK BATTAGLIA, R. KEITH MORLEY, animation, rendering, optimization, painting ACM Reference Format: Pellacini, F., Battaglia, F., Morley, R
Pellacini, Fabio
Book review Light Scattering Reviews 4: Single Light Scattering and
-monograph on the use of space-time Green functions in the description of the diffusive radiation transport in active equation of the radiative transfer theory in the classical style of the ``Soviet'' school of radiativeBook review Light Scattering Reviews 4: Single Light Scattering and Radiative Transfer, A
EK101 Engineering Light Project: Evaluate Residential Lighting
for residential lighting (LED, Compact Fluorescent, Incandescent). Develop a plan of experiments to be conducted, CF, and Incandescent bulbs for the past ten years. (try the wayback time machine if other sources fail). Discuss the key challenges associated with a transition from incandescent lighting
Nittany Lights Landscape Lighting Sept. 28-30, 2012
Nittany Lights Landscape Lighting Workshop Sept. 28-30, 2012 Penn State Campus - University Park with a lecture at the Palmer Art Museum to be provided by internationally known architectural/landscape artist get a chance to think beyond budgets, maintenance, codes, etc and get back to the fun creative side
Light Activated Self-Propelled Colloids
Light-activated self-propelled colloids are synthesized and their active motion is studied using optical microscopy. We propose a versatile route using different photoactive materials, and demonstrate a multiwavelength activation and propulsion. Thanks to the photoelectrochemical properties of two semiconductor materials (\\alpha Fe2 O3 and TiO2 ), a light with an energy higher than the bandgap triggers the reaction of decomposition of hydrogen peroxide and produces a chemical cloud around the particle. It induces a phoretic attraction with neighbouring colloids as well as an osmotic self- propulsion of the particle on the substrate. We use these mechanisms to form colloidal cargos as well as self-propelled particles where the light-activated component is embedded into a dielectric sphere. The particles are self-propelled along a direction otherwise randomized by thermal fluctuations, and exhibit a persistent random walk. For sufficient surface density, the particles spontaneously form "living crystals" which are mobile, break apart and reform. Steering the particle with an external magnetic field, we show that the formation of the dense phase results from the collisions heads-on of the particles. This effect is intrinsically non-equilibrium and a novel principle of organization for systems without detailed balance. Engineering families of particles self-propelled by different wavelength demonstrate a good understanding of both the physics and the chemistry behind the system and points to a general route for designing new families of self-propelled particles.
J. Palacci; S. Sacanna; S. -H. Kim; G. -R. Yi; D. J. Pine; P. M. Chaikin
DOE Municipal Solid-State Street Lighting Consortium
The DOE Municipal Solid-State Street Lighting Consortium shares technical information and experiences related to LED street and area lighting demonstrations and serves as an objective resource for evaluating new products on the market intended for those applications. Cities, power providers, and others who invest in street and area lighting are invited to join the Consortium and share their experiences. The goal is to build a repository of valuable field experience and data that will significantly accelerate the learning curve for buying and implementing high-quality, energy-efficient LED lighting. Consortium members are part of an international knowledge base and peer group, receive updates on Consortium tools and resources, receive the Consortium E-Newsletter, and help steer the work of the Consortium by participating on a committee. Learn more about the Consortium.
Trends in the study of light proton rich nuclei
Recent work in light proton-rich nuclei is reviewed. Evidence for the first T/sub z/ = -5/2 nuclide, /sup 35/Ca, is presented. The mechanisms of two-proton emission following beta-decay is investigated. Future directions in this field are discussed. 23 refs., 5 figs. (WRF)
Moltz, D.M.; Aysto, J.; Hotchkis, M.A.C.; Cerny, J.
Thermoelectrically Pumped Light-Emitting Diodes Operating above Unity Efficiency
A heated semiconductor light-emitting diode at low forward bias voltage Vfield. Here the rates of both radiative and nonradiative recombination ...
Santhanam, Parthiban
Lighting and Dark Sky Regulations
.........................................................................................................2 C. Cherokee County, Georgia's Outdoor Lighting and Road Glare Ordinance visited Apr. 0, 2008) (providing links to ordinances throughout the United States). 2 See, e.g. Cherokee Protection Ordinance (Dec. , 200). 5 See, e.g. Model Lighting Section for Zoning Ordinances and Cherokee
Rosemond, Amy Daum
Quantum Coherence in Photosynthetic Light
the following: How do light-harvesting systems deliver such high efficiency in the presence of disordered:33361 First published online as a Review in Advance on December 13, 2011 The Annual Review of Condensed Matter quantum efficiency of photosynthetic light harvesting. Further, this speculation has led to much effort
Fleming, Graham R.
Light beam frequency comb generator
A light beam frequency comb generator uses an acousto-optic modulator to generate a plurality of light beams with frequencies which are uniformly separated and possess common noise and drift characteristics. A well collimated monochromatic input light beam is passed through this modulator to produce a set of both frequency shifted and unshifted optical beams. An optical system directs one or more frequency shifted beams along a path which is parallel to the path of the input light beam such that the frequency shifted beams are made incident on the modulator proximate to but separated from the point of incidence of the input light beam. After the beam is thus returned to and passed through the modulator repeatedly, a plurality of mutually parallel beams are generated which are frequency-shifted different numbers of times and possess common noise and drift characteristics.
Priatko, Gordon J. (Cupertino, CA); Kaskey, Jeffrey A. (Livermore, CA)
Light weight phosphate cements
A sealant having a specific gravity in the range of from about 0.7 to about 1.6 for heavy oil and/or coal bed methane fields is disclosed. The sealant has a binder including an oxide or hydroxide of Al or of Fe and a phosphoric acid solution. The binder may have MgO or an oxide of Fe and/or an acid phosphate. The binder is present from about 20 to about 50% by weight of the sealant with a lightweight additive present in the range of from about 1 to about 10% by weight of said sealant, a filler, and water sufficient to provide chemically bound water present in the range of from about 9 to about 36% by weight of the sealant when set. A porous ceramic is also disclosed.
Wagh, Arun S. (Naperville, IL); Natarajan, Ramkumar, (Woodridge, IL); Kahn, David (Miami, FL)
Light baryon spectroscopy
The spectrum of excited baryons serves as an excellent probe of quantum chromodynamics (QCD). In particular, highly-excited baryon resonances are sensitive to the details of quark confinement which is only poorly understood within QCD. Facilities worldwide such as Jefferson Lab, ELSA, and MAMI, which study the systematics of hadron spectra in photo- and electroproduction experiments, have accumulated a large amount of data in recent years including unpolarized cross section and polarization data for a large variety of meson-production reactions. These are important steps toward complete experiments that will allow us to unambiguously determine the scattering amplitude in the underlying reactions and to identify the broad and overlapping baryon resonance contributions. Several new nucleon resonances have been proposed and changes to the baryon listing in the 2012 Review of Particle Physics reflect the progress in the field.
Crede, Volker [Florida State University, Department of Physics, Tallahassee, FL (United States)
OLED lighting devices having multi element light extraction and luminescence conversion layer
An apparatus such as a light source has a multi element light extraction and luminescence conversion layer disposed over a transparent layer of the light source and on the exterior of said light source. The multi-element light extraction and luminescence conversion layer includes a plurality of light extraction elements and a plurality of luminescence conversion elements. The light extraction elements diffuses the light from the light source while luminescence conversion elements absorbs a first spectrum of light from said light source and emits a second spectrum of light.
Krummacher, Benjamin Claus (Regensburg, DE); Antoniadis, Homer (Mountain View, CA)
Markerless motion-capture for point-light displays Thomas F. Shipley* and Jonathan S. Brumberg**
can identify the weight lifted in a point-light display, even if the actor is pretending to lift, and despite extensive research in the field of computer graphics, few compelling examples of artificial human
Shipley, Thomas F.
The effectiveness of floor mats as an intervention for standing fatigue of light fabrication workers
A field study was conducted in a light fabrication plant to determine the effectiveness of floor mats on reducing the symptoms of standing fatigue. Specific physiological variables measured include skin temperature of the foot, blood pooling...
O'Brien, Michael Shannon
Using QECBs for Street Lighting Upgrades: Lighting the Way to...
Summarizes how the City of San Diego leveraged 13.1 million in qualified energy conservation bonds to increase the size of a street lighting upgrade project. Author: Lawrence...
Inorganic volumetric light source excited by ultraviolet light
The invention relates to a composition for the volumetric generation of radiation. The composition comprises a porous substrate loaded with a component capable of emitting radiation upon interaction with an exciting radiation. Preferably, the composition is an aerogel substrate loaded with a component, e.g., a phosphor, capable of interacting with exciting radiation of a first energy, e.g., ultraviolet light, to produce radiation of a second energy, e.g., visible light. 4 figures.
Reed, S.; Walko, R.J.; Ashley, C.S.; Brinker, C.J.
The invention relates to a composition for the volumetric generation of radiation. The composition comprises a porous substrate loaded with a component capable of emitting radiation upon interaction with an exciting radiation. Preferably, the composition is an aerogel substrate loaded with a component, e.g., a phosphor, capable of interacting with exciting radiation of a first energy, e.g., ultraviolet light, to produce radiation of a second energy, e.g., visible light.
Reed, Scott (Albuquerue, NM); Walko, Robert J. (Albuquerue, NM); Ashley, Carol S. (Albuquerue, NM); Brinker, C. Jeffrey (Albuquerue, NM)
Saturable absorption and 'slow light'
Quantitative evaluation of some recent 'slow light' experiments based on coherent population oscillations (CPO) shows that they can be more simply interpreted as saturable absorption phenomena. Therefore they do not provide an unambiguous demonstration of 'slow light'. Indeed a limiting condition on the spectral bandwidth is not generally satisfied, such that the requirements for burning a narrow spectral hole in the homogeneously broadened absorption line are not met. Some definitive tests of 'slow light' phenomena are suggested, derived from analysis of phase shift and pulse delay for a saturable absorber
Adrian C Selden
46th Street Pilot Street Lighting Project
Street to 48th Street) as standard high-pressure sodium (HPS) lighting comparison corridor #12;The over time #12;Initial Lighting Comparison #12;Lighting Project Location #12;Street Light Layout 3046th Street Pilot Street Lighting Project A Joint Venture: Hennepin County & City of Minneapolis
Projection screen having reduced ambient light scattering
An apparatus and method for improving the contrast between incident projected light and ambient light reflected from a projection screen are described. The efficiency of the projection screen for reflection of the projected light remains high, while permitting the projection screen to be utilized in a brightly lighted room. Light power requirements from the projection system utilized may be reduced.
Sweatt, William C. (Albuquerque, NM)
Residential Lighting: Title 24 and Technology Update
Residential Lighting: Title 24 and Technology Update Best practices in lighting design to comply;INTRODUCTION Course Topics Part 1: Technology Overview · Common lighting terminology · Residential lighting residential lighting regulation · Design examples to reach or exceed code Part 5: Compliance Process · Step
Open Systems Dynamics for Propagating Quantum Fields
In this dissertation, I explore interactions between matter and propagating light. The electromagnetic field is modeled as a reservoir of quantum harmonic oscillators successively streaming past a quantum system. Each weak and fleeting interaction entangles the light and the system, and the light continues its course. Within the framework of open quantum systems, the light is eventually traced out, leaving the reduced quantum state of the system as the primary mathematical subject. Two major results are presented. The first is a master equation approach for a quantum system interacting with a traveling wave packet prepared with a definite number of photons. In contrast to quasi-classical states, such as coherent or thermal fields, these N-photon states possess temporal mode entanglement, and local interactions in time have nonlocal consequences. The second is a model for a three-dimensional light-matter interface for an atomic ensemble interacting with a paraxial laser beam and its application to the generation of QND spin squeezing. Both coherent and incoherent dynamics due to spatially inhomogeneous atom-light coupling across the ensemble are accounted for. Measurement of paraxially scattered light can generate squeezing of an atomic spin wave, while diffusely scattered photons lead to spatially local decoherence.
Ben Q. Baragiola
E-Print Network 3.0 - atomic property fields Sample Search Results
transparency, photons Could not "see" atom(EIT) Summary: ;6 Relationship between Atom optics and Quantum Optics Comparison Quantum Optics Light Wave EM fields, Maxwell... )...
Next Generation Light Source Workshops
Next Generation Light Source Workshops A series of workshops will be held in late August with the goal of refining the scientific drivers for the facility and translating the...
Flexible liquid core light guide with focusing and light shaping attachments
A liquid light guide system for ultraviolet light is disclosed that has a light shaping arrangement for the emitted light, a stable liquid core and sheath and reliable and effective end closures. 12 figs.
Kross, B.J.; Majewski, S.; Zorn, C.J.; Majewski, L.A.
EECBG Success Story: Lighting Retrofit Improving Visibility,...
New LED lighting fixtures (right) emit a whiter light than existing high-pressure sodium cobra head streetlights (left) and don't spill light onto nearby houses. | Photos courtesy...
Office Lighting: Title 24 & Technology Update
Office Lighting: Title 24 & Technology Update Kelly Cunningham Outreach Director email@example.com California Lighting Technology Center, UC Davis RESEARCH . INNOVATION . PARTNERSHIP Supporting compliance apply the Title 24 Building Energy Efficiency Standards code requirements specific to lighting
Self-reported Impacts of LED Lighting Technology Comparedto Fuel-based Lighting on Night Market Business Prosperity28, no. 4, pp. 533-546. Lighting Africa (prepared by Dalberg
Beyond the Replacement Paradigm: Smart Lighting
Switches � Smart Building & Grid Interfaces � Efficient full spectrum LEDs without droop � Versatile, low - Visible Light Communications Integration of smart fixtures, networked sensors and control systemsBeyond the Replacement Paradigm: Smart Lighting Robert F. Karlicek, Jr. Director, Smart Lighting
Salama, Khaled
Lumental : web-based tunable lighting control
Dynamically adjusting the light spectrum of spectrum-tunable light fixtures promises significant energy savings over binary or incremental dimming control. To enable this level of controllability, lighting must evolve from ...
Hall, Harrison King
Novel phosphors for solid state lighting
Solid state white light emitting diode lighting devices outperform conventional light sources in terms of lifetime, durability, and lumens per watt. However, the capital contribution is still to high to encourage widespread adoption. Furthermore...
Furman, Joshua D
Laser remote sensing of backscattered light from a target sample
A laser remote sensing apparatus comprises a laser to provide collimated excitation light at a wavelength; a sensing optic, comprising at least one optical element having a front receiving surface to focus the received excitation light onto a back surface comprising a target sample and wherein the target sample emits a return light signal that is recollimated by the front receiving surface; a telescope for collecting the recollimated return light signal from the sensing optic; and a detector for detecting and spectrally resolving the return light signal. The back surface further can comprise a substrate that absorbs the target sample from an environment. For example the substrate can be a SERS substrate comprising a roughened metal surface. The return light signal can be a surface-enhanced Raman signal or laser-induced fluorescence signal. For fluorescence applications, the return signal can be enhanced by about 10.sup.5, solely due to recollimation of the fluorescence return signal. For SERS applications, the return signal can be enhanced by 10.sup.9 or more, due both to recollimation and to structuring of the SERS substrate so that the incident laser and Raman scattered fields are in resonance with the surface plasmons of the SERS substrate.
Sweatt, William C. (Albuquerque, NM); Williams, John D. (Albuquerque, NM)
Condenser for illuminating a ringfield camera with synchrotron emission light
The present invention relates generally to the field of condensers for collecting light from a synchrotron radiation source and directing the light into a ringfield of a lithography camera. The present invention discloses a condenser comprising collecting, processing, and imaging optics. The collecting optics are comprised of concave and convex spherical mirrors that collect the light beams. The processing optics, which receive the light beams, are comprised of flat mirrors that converge and direct the light beams into a real entrance pupil of the camera in a symmetrical pattern. In the real entrance pupil are located flat mirrors, common to the beams emitted from the preceding mirrors, for generating substantially parallel light beams and for directing the beams toward the ringfield of a camera. Finally, the imaging optics are comprised of a spherical mirror, also common to the beams emitted from the preceding mirrors, images the real entrance pupil through the resistive mask and into the virtual entrance pupil of the camera. Thus, the condenser is comprised of a plurality of beams with four mirrors corresponding to a single beam plus two common mirrors.
Sweatt, William C. (13027 Arroyo de Vista, Albuquerque, NM 87111)
The present invention relates generally to the field of condensers for collecting light from a synchrotron radiation source and directing the light into a ringfield of a lithography camera. The present invention discloses a condenser comprising collecting, processing, and imaging optics. The collecting optics are comprised of concave and convex spherical mirrors that collect the light beams. The processing optics, which receive the light beams, are comprised of flat mirrors that converge and direct the light beams into a real entrance pupil of the camera in a symmetrical pattern. In the real entrance pupil are located flat mirrors, common to the beams emitted from the preceding mirrors, for generating substantially parallel light beams and for directing the beams toward the ringfield of a camera. Finally, the imaging optics are comprised of a spherical mirror, also common to the beams emitted from the preceding mirrors, images the real entrance pupil through the resistive mask and into the virtual entrance pupil of the camera. Thus, the condenser is comprised of a plurality of beams with four mirrors corresponding to a single beam plus two common mirrors. 9 figs.
Sweatt, W.C.
Low-Temperature Light Detectors with Neganov-Luke Amplification
The simultaneous measurement of phonons and scintillation light induced by incident particles in a scintillating crystal such as CaWO4 is a powerful technique for the active rejection of background induced by gamma's and beta's as well as neutrons in direct Dark Matter searches. However, less than ~1% of the energy deposited in a CaWO4 crystal is detected as light. Thus, very sensitive light detectors are needed for an efficient event-by-event background discrimination. Due to the Neganov-Luke effect, the threshold of low-temperature light detectors based on semiconducting substrates can be improved significantly by drifting the photon-induced electron-hole pairs in an applied electric field. We present measurements with low-temperature light detectors based on this amplification mechanism. The Neganov-Luke effect makes it possible to improve the signal-to-noise ratio of our light detectors by a factor of ~9 corresponding to an energy threshold of ~21 eV. We also describe a method for an absolute energy calib...
Isaila, C; Feilitzsch, F v; G�tlein, A; Kemmer, J; Lachenmaier, T; Lanfranchi, J -C; Pfister, S; Potzel, W; Roth, S; Sivers, M v; Strauss, R; Westphal, W; Wiest, F
Transport and Quantum Walk of Nonclassical Light in Coupled Waveguides
We study the transport and quantum walk of nonclassical light in an array of coupled waveguides which have novel properties like very low decoherence and thus making them ideal for storage of quantum information. We show how squeezing gets turned over from one waveguide to another. We further show how input nonclassical light can generate entanglement among different waveguides. Our results involve both first quantization due to array structure and second quantization due to the quantum nature of fields and can also be used to discuss the Talbot effect in the quantum regime.
Amit Rai; G. S. Agarwal; J. H. H. Perk
Laser in ultrastrong light-matter coupling regime
In ultrastrong light-matter coupling regime, it is found theoretically that lasing accompanies odd-order harmonics of radiation field both inside and outside the cavity and even-order harmonics of atomic population. This qualitative difference from the normal laser is generally obtained independent of whether we choose the Coulomb gauge or the electric-dipole one, although quantitative behaviors strongly depend on the gauge choice due to the two-level and single-mode approximations used in our calculation. The lasing also shows a bistability for strong enough light-matter coupling and low enough cavity loss.
Motoaki Bamba; Tetsuo Ogawa
Light beam range finder
A "laser tape measure" for measuring distance which includes a transmitter such as a laser diode which transmits a sequence of electromagnetic pulses in response to a transmit timing signal. A receiver samples reflections from objects within the field of the sequence of visible electromagnetic pulses with controlled timing, in response to a receive timing signal. The receiver generates a sample signal in response to the samples which indicates distance to the object causing the reflections. The timing circuit supplies the transmit timing signal to the transmitter and supplies the receive timing signal to the receiver. The receive timing signal causes the receiver to sample the reflection such that the time between transmission of pulses in the sequence in sampling by the receiver sweeps over a range of delays. The transmit timing signal causes the transmitter to transmit the sequence of electromagnetic pulses at a pulse repetition rate, and the received timing signal sweeps over the range of delays in a sweep cycle such that reflections are sampled at the pulse repetition rate and with different delays in the range of delays, such that the sample signal represents received reflections in equivalent time. The receiver according to one aspect of the invention includes an avalanche photodiode and a sampling gate coupled to the photodiode which is responsive to the received timing signal. The transmitter includes a laser diode which supplies a sequence of visible electromagnetic pulses. A bright spot projected on to the target clearly indicates the point that is being measured, and the user can read the range to that point with precision of better than 0.1%.
McEwan, Thomas E. (Livermore, CA)
A ``laser tape measure`` for measuring distance is disclosed which includes a transmitter such as a laser diode which transmits a sequence of electromagnetic pulses in response to a transmit timing signal. A receiver samples reflections from objects within the field of the sequence of visible electromagnetic pulses with controlled timing, in response to a receive timing signal. The receiver generates a sample signal in response to the samples which indicates distance to the object causing the reflections. The timing circuit supplies the transmit timing signal to the transmitter and supplies the receive timing signal to the receiver. The receive timing signal causes the receiver to sample the reflection such that the time between transmission of pulses in the sequence in sampling by the receiver sweeps over a range of delays. The transmit timing signal causes the transmitter to transmit the sequence of electromagnetic pulses at a pulse repetition rate, and the received timing signal sweeps over the range of delays in a sweep cycle such that reflections are sampled at the pulse repetition rate and with different delays in the range of delays, such that the sample signal represents received reflections in equivalent time. The receiver according to one aspect of the invention includes an avalanche photodiode and a sampling gate coupled to the photodiode which is responsive to the received timing signal. The transmitter includes a laser diode which supplies a sequence of visible electromagnetic pulses. A bright spot projected on to the target clearly indicates the point that is being measured, and the user can read the range to that point with precision of better than 0.1%. 7 figs.
McEwan, T.E.
Lighting and GeometryLighting and Geometry Prof. Michael Misha Kazhdan
Lighting and GeometryLighting and Geometry Prof. Michael Misha Kazhdan misha· The viewer · The lights N Viewer · The lights · The geometry · The surface properties N L2 V Viewer L1Outline · Surface Properties (Review) · Lighting· Lighting · Geometry· Geometry #12;Surface Properties (Review
Fröhlich, Peter
Oscillating light wall above a sunspot light bridge
With the high tempo-spatial \\emph{Interface Region Imaging Spectrograph} 1330 {\\AA} images, we find that many bright structures are rooted in the light bridge of NOAA 12192, forming a \\emph{light wall}. The light wall is brighter than the surrounding areas, and the wall top is much brighter than the wall body. The New Vacuum Solar Telescope H$\\alpha$ and the \\emph{Solar Dynamics Observatory} 171 {\\AA} and 131 {\\AA} images are also used to study the light wall properties. In 1330 {\\AA}, 171 {\\AA}, and 131 {\\AA}, the top of the wall has a higher emission, while in the H$\\alpha$ line, the wall top emission is very low. The wall body corresponds to bright areas in 1330 {\\AA} and dark areas in the other lines. The top of the light wall moves upward and downward successively, performing oscillations in height. The deprojected mean height, amplitude, oscillation velocity, and the dominant period are determined to be 3.6 Mm, 0.9 Mm, 15.4 km s$^{-1}$, and 3.9 min, respectively. We interpret the oscillations of the lig...
Yang, Shuhong; Jiang, Fayu; Xiang, Yongyuan
Science, Optics and You: Light and Colors
opticstutorialsindex.html INTRODUCTION LIGHT AND COLORS MODULE m4 SCIENCE, OPTICS & YOU GUIDEBOOK - 62 - SCIENCE, OPTICS & YOU GUIDEBOOK - 63 - m4: Light &...
Controls Norma Isahakian, City of Los Angeles Bureau of Street Lighting San Jose's "Smart" LED Streetlights: Controlled Amy Olay, City of San Jose Adaptive Lighting Controls...
Scientists produce transparent, light-harvesting material
Transparent, light-harvesting material Scientists produce transparent, light-harvesting material The material could be used in development of transparent solar panels. November 3,...
LIGHT WATER REACTOR SUSTAINABILITY PROGRAM: INTRODUCTION The Light Water Reactor Sustainability (LWRS) Program is the primary programmatic activity that addresses Objective 1...
OTEC- Commercial Lighting Retrofit Rebate Program
The Oregon Trail Electric Consumers Cooperative (OTEC) offers a commercial lighting retrofit program that provides rebates for commercial businesses that change existing lighting to more energy...
THE LUMINA PROJECT http://light.lbl.gov
components for the LED lights. #12;2 Introduction Solid-state lighting based on light emitting diode (LED
Jacobson, Arne
Laser microfluidics: fluid actuation by light
The development of microfluidic devices is still hindered by the lack of robust fundamental building blocks that constitute any fluidic system. An attractive approach is optical actuation because light field interaction is contactless and dynamically reconfigurable, and solutions have been anticipated through the use of optical forces to manipulate microparticles in flows. Following the concept of an 'optical chip' advanced from the optical actuation of suspensions, we propose in this survey new routes to extend this concept to microfluidic two-phase flows. First, we investigate the destabilization of fluid interfaces by the optical radiation pressure and the formation of liquid jets. We analyze the droplet shedding from the jet tip and the continuous transport in laser-sustained liquid channels. In the second part, we investigate a dissipative light-flow interaction mechanism consisting in heating locally two immiscible fluids to produce thermocapillary stresses along their interface. This opto-capillary coupling is implemented in adequate microchannel geometries to manipulate two-phase flows and propose a contactless optical toolbox including valves, droplet sorters and switches, droplet dividers or droplet mergers. Finally, we discuss radiation pressure and opto-capillary effects in the context of the 'optical chip' where flows, channels and operating functions would all be performed optically on the same device.
Jean-Pierre Delville; Matthieu Robert De Saint-Vincent; Robert D. Schroll; Hamza Chraibi; B. Issenmann; R�gis Wunenburger; Didier Lasseux; Wendy W Zhang; Etienne Brasselet
Highly Efficient Silicon Light Emitting Diode
In this paper, we describe the fabrication, using standard silicon processing techniques, of silicon light-emitting diodes (LED) that efficiently emit photons with energy around the silicon bandgap. The improved efficiency had been explained by the spatial confinement of charge carriers due to a local strain field that is formed by dislocation loop arrays. The dependence of device electroluminescent properties on the annealing conditions is carefully examined as a high temperature process has profound influence on these dislocations. Increased luminescent intensity at higher device temperature, together with pure diffusion current conduction mechanism evidently shows the influence of the dislocation loops. The electrical properties of the diode are reasonable with low leakage reverse current.
Leminh Holleman Wallinga; P. Leminh; J. Holleman; H. Wallinga
Gas Model of Gravitons with Light Speed
We first review some aspects of gravitational wave and the thermodynamic expression of Einstein field equations, these achieved conclusions allow people to think of Einstein's gravitational wave as a kind of sound wave in ordinary gas which propagates as an adiabatic compression wave. In the following, using the properties of photon gas in "white wall box", we find an analogous relationship between ordinary gas and photon gas through sound velocity formula. At last, by taking the ordinary gas as an intermediary, we find that gravitational wave is analogous to photon gas, or equally, gravitons are analogous to photons although they are different in some ways such as spins and coupling strengths, and these different properties don't affect their propagation speeds. Utilizing this analogous relationship, we achieve the gas model of gravitons and this model naturally gives out the light speed of gravitons
Ming Chen; Yong-Chang Huang
Types of Lighting in Commercial Buildings - Lighting Types
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelinesProved ReservesFeet)per Thousand28 198 18 Q 10 14.0 12.2 1.1 QPDF LightingLighting
LED Provides Effective and Efficient Parking Area Lighting at...
White Light Options for Parking Area Lighting Demonstration Assessment of Light Emitting Diode (LED) Street Lighting, Final Report Guide to FEMP-Designated Parking Lot...
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Demonstration Assessment of Light-Emitting Diode (LED) Freezer Case Lighting Demonstration Assessment of Light-Emitting Diode (LED) Freezer Case Lighting This document is a report...
Demonstration Assessment of Light Emitting Diode (LED) Street...
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Entomology 489 Field Entomology Field Project Guide
with information, people, materials). Field Projects (your project should...) FEntomology 489 Field Entomology Field Project Guide A small-group field project is required for ENTO 489 Field Entomology. This guide provides general information about the field-project
Behmer, Spencer T.
False qubits?: Polarization of light and Josephson junction
We compare two physical systems: polarization degrees of freedom of a macroscopic light beam and the Josephson junction (JJ) in the "charge qubit regime". The first system obviously cannot carry genuine quantum information and we show that the maximal entanglement which could be encoded into polarization of two light beams scales like 1/(photon number). Two theories of JJ, one leading to the picture of "JJ-qubit" and the other based on the mean-field approach are discussed. The later, which seems to be more appropriate, implies that the JJ system is, essentially, mathematically equivalent to the polarization of a light beam with the number of photons replaced by the number of Cooper pairs. The existing experiments consistent with the "JJ-qubit" picture and the theoretical arguments supporting, on the contrary, the classical model are briefly discussed. The Franck-Hertz-type experiment is suggested as an ultimate test of the JJ nature.
Robert Alicki
Kinetics of atoms in a bichromatic field
The kinetics of atoms in a bichromatic field is considered. Analytic solutions are obtained for the force, friction coefficient, and diffusion coefficient in the model of a two-level atom without limitations imposed on the intensity of light fields. This effect is observed in the domain of global minima and maxima of the optical potential (i.e., at points where the relative phase of two standing waves is Greek-Phi-Symbol = 0, {pi}/2.
Prudnikov, O. N., E-mail: email@example.com [Novosibirsk State University (Russian Federation); Baklanov, A. S. [Russian Academy of Sciences, Institute of Laser Physics, Siberian Branch (Russian Federation)] [Russian Academy of Sciences, Institute of Laser Physics, Siberian Branch (Russian Federation); Taichenachev, A. V. [Novosibirsk State University (Russian Federation)] [Novosibirsk State University (Russian Federation); Tumaikin, A. M. [Russian Academy of Sciences, Institute of Laser Physics, Siberian Branch (Russian Federation)] [Russian Academy of Sciences, Institute of Laser Physics, Siberian Branch (Russian Federation); Yudin, V. I. [Novosibirsk State University (Russian Federation)] [Novosibirsk State University (Russian Federation)
Enrichment of light hydrocarbon mixture
Light hydrocarbon enrichment is accomplished using a vertically oriented distillation column having a plurality of vertically oriented, nonselective micro/mesoporous hollow fibers. Vapor having, for example, both propylene and propane is sent upward through the distillation column in between the hollow fibers. Vapor exits neat the top of the column and is condensed to form a liquid phase that is directed back downward through the lumen of the hollow fibers. As vapor continues to ascend and liquid continues to countercurrently descend, the liquid at the bottom of the column becomes enriched in a higher boiling point, light hydrocarbon (propane, for example) and the vapor at the top becomes enriched in a lower boiling point light hydrocarbon (propylene, for example). The hollow fiber becomes wetted with liquid during the process.
Yang; Dali (Los Alamos, NM); Devlin, David (Santa Fe, NM); Barbero, Robert S. (Santa Cruz, NM); Carrera, Martin E. (Naperville, IL); Colling, Craig W. (Warrenville, IL)
Yang, Dali (Los Alamos, NM); Devlin, David (Santa Fe, NM); Barbero, Robert S. (Santa Cruz, NM); Carrera, Martin E. (Naperville, IL); Colling, Craig W. (Warrenville, IL)
Monitored lighting energy savings from dimmable lighting controls in
, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by its trade name, trademark 94720, USA Abstract Digital addressable, dimmable lighting controls were introduced to the US market
National Synchrotron Light Source Activity Report 1998
National Synchrotron Light Source Activity Report for period October 1, 1997 through September 30, 1998
Rothman, Eva
National Synchrotron Light Source annual report 1991
This report contains abstracts from research conducted at the national synchrotron light source. (LSP)
Hulbert, S.L.; Lazarz, N.N. (eds.)
Organic electroluminescent devices having improved light extraction
Organic electroluminescent devices having improved light extraction include a light-scattering medium disposed adjacent thereto. The light-scattering medium has a light scattering anisotropy parameter g in the range from greater than zero to about 0.99, and a scatterance parameter S less than about 0.22 or greater than about 3.
Shiang, Joseph John (Niskayuna, NY)
9: Lighting Energy Usage for Commercial Building Lighting incommercial buildings. 4.2. Energy The California Energy Commission has analyzed lighting energy usageCommercial Sector on 2003 Peak Day [Source: CEC 2003 Data] Figure 9: Lighting Energy Usage for Commercial Building
Nonimaging light concentrator with uniform irradiance
A nonimaging light concentrator system including a primary collector of light, an optical mixer disposed near the focal zone for collecting light from the primary collector, the optical mixer having a transparent entrance aperture, an internally reflective housing for substantially total internal reflection of light, a transparent exit aperture and an array of photovoltaic cells disposed near the transparent exit aperture.
Winston, Roland (Chicago, IL); Gee, Randy C. (Arvada, CO)
Light modulated switches and radio frequency emitters
The disclosure relates to a light modulated electron beam driven radiofrequency emitter. Pulses of light impinge on a photoemissive device which generates an electron beam having the pulse characteristics of the light. The electron beam is accelerated through a radiofrequency resonator which produces radiofrequency emission in accordance with the electron, hence, the light pulses.
Wilson, Mahlon T. (Los Alamos, NM); Tallerico, Paul J. (Los Alamos, NM)
silicon light-emitting diodes (LED) that efficiently emit photons with energy around the silicon bandgap
Today LED Holiday Lights, Tomorrow the World?
This article for The APEM Advantage, the quarterly newsletter of the Association of Professional Energy Managers (APEM) describes the recent increase in the popularity of light emitting diode (LED) lighting and compares LED light output with that of incandescent and compact fluorescent lighting.
Gordon, Kelly L.
Damage tolerant light absorbing material
A light absorbing article comprised of a composite of carbon-bonded carbon fibers, is prepared by: blending carbon fibers with a carbonizable organic powder to form a mixture; dispersing the mixture into an aqueous slurry; vacuum molding the aqueous slurry to form a green article; drying and curing the green article to form a cured article; and, carbonizing the cured article at a temperature of at least about 1000 C to form a carbon-bonded carbon fiber light absorbing composite article having a bulk density less than 1 g/cm[sup 3]. 9 figures.
Lauf, R.J.; Hamby, C. Jr.; Akerman, M.A.; Seals, R.D.
Solid state electrochromic light modulator
An all solid-state variable transmission electrochromic device has a source of charge compensating ions. An inorganic oxide counterelectrode film which on reduction with the accompanying insertion of the charge compensating ions increases its transmission of light of predetermined wavelength is separated from a primary electrochromic film which on reduction with the accompanying insertion of the charge compensating ions decreases its transmission of light of predetermined wavelength by an insulating electrolyte film that transports the charge compensating ions. First and second electrodes are contiguous with the inorganic oxide counter electrode film and the primary electrochromic film, respectively, and separated by the three films.
Cogan, Stuart F. (111 Downey St., Norwood, MA 02062); Rauh, R. David (111 Downey St., Norwood, MA 02062)
Cogan, Stuart F. (Sudbury, MA); Rauh, R. David (Newton, MA)
An all solid-state variable transmission electrochromic device has a source of charge compensating ions. An inorganic oxide counter electrode film which on reduction with the accompanying insertion of the charge compensating ions increases its transmission of light of predetermined wavelength is separated from a primary electrochromic film which on reduction with the accompanying insertion of the charge compensating ions decreases its transmission of light of predetermined wavelength by an insulating electrolyte film that transports the charge compensating ions. First and second electrodes are contiguous with the inorganic oxide counter electrode film and the primary electrochromic film, respectively, and separated by the three films. 4 figs.
Cogan, S.F.; Rauh, R.D.
A light absorbing article comprised of a composite of carbon-bonded carbon fibers, prepared by: blending carbon fibers with a carbonizable organic powder to form a mixture; dispersing the mixture into an aqueous slurry; vacuum molding the aqueous slurry to form a green article; drying and curing the green article to form a cured article; and, carbonizing the cured article at a temperature of at least about 1000.degree. C. to form a carbon-bonded carbon fiber light absorbing composite article having a bulk density less than 1 g/cm.sup.3.
Lauf, Robert J. (Oak Ridge, TN); Hamby, Jr., Clyde (Harriman, TN); Akerman, M. Alfred (Knoxville, TN); Seals, Roland D. (Oak Ridge, TN)
Fluorescent Lighting | Department of Energy
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of Energy Power.pdf Flash2006-14.pdfattachment.pdf6.pdf5.pdfFluorescent Lighting Fluorescent Lighting
Illuminating system and method for specialized and decorative lighting using liquid light guides
The present invention comprises an illumination system for specialized decorative lighting including a light source, a flexible plastic tube sheath for distributing the light to a remote location, a transparent liquid core filling the tube that has an index of refraction greater than that of the plastic tube and an arrangement where light coupled from the light source is caused to leak from the liquid light guide at desired locations for the purposes of specialized lighting, such as underwater illumination in swimming pools.
Zorn, Carl J. (Yorktown, VA); Kross, Brian J. (Yorktown, VA); Majewski, Stanislaw (Grafton, VA); Wojcik, Randolph F. (Yorktown, VA)
National Synchrotron Light Source 2008 Activity Report
Funded by the U.S. Department of Energy's Office of Basic Energy Sciences, the National Synchrotron Light Source (NSLS) is a national user facility that operates two electron storage rings: X-Ray (2.8 GeV, 300 mA) and Vacuum Ultraviolet (VUV) (800 mev, 1.0A). These two rings provide intense light spanning the electromagnetic spectrum -- from very long infrared rays to ultraviolet light and super-short x-rays -- to analyze very small or highly dilute samples. The properties of this light, and the specially designed experimental stations, called beamlines, allow scientists in many diverse disciplines of research to perform experiments not possible at their own laboratories. Each year, about 2,200 scientists from more than 400 universities and companies use the NSLS for research in such diverse fields as biology, physics, chemistry, geology, medicine, and environmental and materials sciences. For example, researchers have used the NSLS to examine the minute details of computer chips, decipher the structures of viruses, probe the density of bone, determine the chemical composition of moon rocks, and reveal countless other mysteries of science. The facility has 65 operating beamlines, with 51 beamlines on the X-Ray Ring and 14 beamlines on the VUV-Infrared Ring. It runs seven days a week, 24 hours a day throughout the year, except during periods of maintenance and studies. Researchers are not charged for beam time, provided that the research results are published in open literature. Proprietary research is conducted on a full-cost-recovery basis. With close to 1,000 publications per year, the NSLS is one of the most prolific scientific facilities in the world. Among the many accolades given to its users and staff, the NSLS has won nine R&D 100 Awards for innovations ranging from a closed orbit feedback system to the first device able to focus a large spread of high-energy x-rays. In addition, a visiting NSLS researcher shared the 2003 Nobel Prize in Chemistry for work explaining how one class of proteins helps to generate nerve impulses.
Graphene transparency in weak magnetic fields
We carry out an explicit calculation of the vacuum polarization tensor for an effective low-energy model of monolayer graphene in the presence of a weak magnetic field of intensity $B$ perpendicularly aligned to the membrane. By expanding the quasiparticle propagator in the Schwinger proper time representation up to order $(eB)^2$, where $e$ is the unit charge, we find an explicitly transverse tensor, consistent with gauge invariance. Furthermore, assuming that graphene is radiated with monochromatic light of frequency $\\omega$ along the external field direction, from the modified Maxwell's equations we derive the intensity of transmitted light and the angle of polarization rotation in terms of the longitudinal ($\\sigma_{xx}$) and transverse ($\\sigma_{xy}$) conductivities. Corrections to these quantities, both calculated and measured, are of order $(eB)^2/\\omega^4$. Our findings generalize and complement previously known results reported in literature regarding the light absorption problem in graphene from th...
Valenzuela, David; Loewe, Marcelo; Raya, Alfredo
Strategy Guideline: High Performance Residential Lighting
The Strategy Guideline: High Performance Residential Lighting has been developed to provide a tool for the understanding and application of high performance lighting in the home. The high performance lighting strategies featured in this guide are drawn from recent advances in commercial lighting for application to typical spaces found in residential buildings. This guide offers strategies to greatly reduce lighting energy use through the application of high quality fluorescent and light emitting diode (LED) technologies. It is important to note that these strategies not only save energy in the home but also serve to satisfy the homeowner's expectations for high quality lighting.
Holton, J.
Tailoring the slow light behavior in terahertz metasurfaces
We experimentally study the effect of near field coupling on the transmission of light in terahertz metasurfaces, possessing slightly distinctive SRR resonances. Our results show that the interplay between the strengths of electric and magnetic dipoles, modulates the amplitude of resulting electromagnetically induced transmission, probed under different types of asymmetries in the coupled system. We employ a two-particle model to theoretically study the influence of the near field coupling between bright and quasi-dark modes on the transmission properties of the coupled system and we find an excellent agreement with our observed results. Adding to the enhanced transmission characteristics, our results provide a deeper insight into the metamaterial analogues of atomic electromagnetically induced transparency and offer an approach to engineer slow light devices, broadband filters and attenuators at terahertz frequencies.
Manjappa, Manukumara; Cong, Longqing; Bettiol, Andrew A; Zhang, Weili; Singh, Ranjan
Light-matter excitations in the ultra-strong coupling regime Aji A. Anappara,1
-polariton splitting in solid-state sys- tems [2]. This regime is actively investigated in many research fields-field interaction. The energy of the excitations is affected and a new squeezed ground state is defined containingLight-matter excitations in the ultra-strong coupling regime Aji A. Anappara,1 Simone De Liberato,2
One-way propagation of light in Born-Infeld-like metamaterials
We propose and investigate a family of nonlinear metamaterials in which light rays propagate just in one direction -- one-way propagation. Furthermore, we argue how such nonlinear media could provide an analog model for investigating the Born-Infeld Lagrangian in the realm of fields larger than its scale field.
Vitorio A. De Lorenci; Jonas P. Pereira
Absorption free superluminal light propagation in a three level pump-probe system
We investigate the dispersion and the absorption properties of a weak probe field in a three-level pump-probe atomic system. It is shown that the slope of dispersion changes from positive to negative just with the intensity of the coherent or indirect incoherent pumping fields. It is demonstrated that the absorption free superluminal light propagation is appeared in this system.
M. Mahmoudi; S. Worya Rabiei; L. Ebrahimi Zohravi; M. Sahrai
CLTC is a not-for-profit research, development and demonstration facility leading innovations in energy-efficient lighting and daylighting technologies.
in energy-efficient lighting and daylighting technologies. Collaborating with partners in government common ways CLTC utilizes funding to advance the science of energy-efficient lighting and daylighting and field test emerging lighting and daylighting technologies. Demonstrations help vet the performance
Quasiparticle light elements and quantum condensates in nuclear matter
Nuclei in dense matter are influenced by the medium. In the cluster mean field approximation, an effective Schr\\"odinger equation for the $A$-particle cluster is obtained accounting for the effects of the surrounding medium, such as self-energy and Pauli blocking. Similar to the single-baryon states (free neutrons and protons), the light elements ($2 \\le A \\le 4$, internal quantum state $\
G. R�pke
Coherent flash of light emitted by a cold atomic cloud
When a resonant laser sent on an optically thick cold atomic cloud is abruptly switched off, a coherent flash of light is emitted in the forward direction. This transient phenomenon is observed due to the highly resonant character of the atomic scatterers. We analyze quantitatively its temporal properties and show very good agreement with theoretical predictions. Based on complementary experiments, the phase of the coherent field is reconstructed without interferometric tools.
Chalony, M. [Institut Non Lineaire de Nice, Universite de Nice Sophia-Antipolis, CNRS, F-06560 Valbonne (France); Pierrat, R. [Institut Langevin, ESPCI ParisTech, CNRS UMR 7587, 10 rue Vauquelin, F-75005 Paris (France); Delande, D. [Laboratoire Kastler Brossel, UPMC-Paris 6, ENS, CNRS, 4 Place Jussieu, F-75005 Paris (France); Wilkowski, D. [Institut Non Lineaire de Nice, Universite de Nice Sophia-Antipolis, CNRS, F-06560 Valbonne (France); Centre for Quantum Technologies, National University of Singapore, 117543 Singapore (Singapore)
Experimental nonclassicality of single-photon-added thermal light states
We report the experimental realization and tomographic analysis of quantum light states obtained by exciting a classical thermal field by a single photon. Such states, although completely incoherent, possess a tunable degree of quantumness which is here exploited to put to a stringent experimental test some of the criteria proposed for the proof and the measurement of state nonclassicality. The quantum character of the states is also given in quantum information terms by evaluating the amount of entanglement that they can produce.
Zavatta, Alessandro [Istituto Nazionale di Ottica Applicata (CNR), L.go E. Fermi, 6, I-50125, Florence (Italy); Department of Physics, University of Florence, I-50019 Sesto Fiorentino, Florence (Italy); Parigi, Valentina [Department of Physics, University of Florence, I-50019 Sesto Fiorentino, Florence (Italy); LENS, Via Nello Carrara 1, 50019 Sesto Fiorentino, Florence (Italy); Bellini, Marco [Istituto Nazionale di Ottica Applicata (CNR), L.go E. Fermi, 6, I-50125, Florence (Italy); LENS, Via Nello Carrara 1, 50019 Sesto Fiorentino, Florence (Italy)
Three-dimensional light trap for reflective particles
A system for containing either a reflective particle or a particle having an index of refraction lower than that of the surrounding media in a three-dimensional light cage. A light beam from a single source illuminates an optics system and generates a set of at least three discrete focussed beams that emanate from a single exit aperture and focus on to a focal plane located close to the particle. The set of focal spots defines a ring that surrounds the particle. The set of focussed beams creates a "light cage" and circumscribes a zone of no light within which the particle lies. The surrounding beams apply constraining forces (created by radiation pressure) to the particle, thereby containing it in a three-dimensional force field trap. A diffractive element, such as an aperture multiplexed lens, or either a Dammann grating or phase element in combination with a focusing lens, may be used to generate the beams. A zoom lens may be used to adjust the size of the light cage, permitting particles of various sizes to be captured and contained.
Neal, Daniel R. (Tijeras, NM)
The light meson spectroscopy program
Recent discoveries of a number of unexpected new charmomium-like meson states at the BaBar and Belle B-factories have demonstrated how little is still known about meson spectroscopy. In this talk we will review recent highlights of the light quark spectroscopy from collider and fixed target experiments.
Smith, Elton S. [JLAB
Metacapacitors for LED Lighting: Metacapacitors
ADEPT Project: The CUNY Energy Institute is developing less expensive, more efficient, smaller, and longer-lasting power converters for energy-efficient LED lights. LEDs produce light more efficiently than incandescent lights and last significantly longer than compact fluorescent bulbs, but they require more sophisticated power converter technology, which increases their cost. LEDs need more sophisticated converters because they require a different type of power (low voltage direct current, or DC) than what's generally supplied by power outlets. The CUNY Energy Institute is developing sophisticated power converters for LEDs that contain capacitors made from new, nanoscale materials. Capacitors are electrical components that are used to store energy. CUNY's unique capacitors are configured with advanced power circuits to more efficiently control and convert power to the LED lighting source. They also eliminate the need for large magnetic components, instead relying on networks of capacitors that can be easily printed on plastic substrate. CUNY's prototype LED power converter already meets DOE's 2020 projections for the energy efficiency of LED power converters.
Bright prospects for lighting retrofits
Great potential for energy savings can be found in the alleys, hallways and stairwells of multifamily buildings, but this potential is not always easy to realize. This article discusses the solution to common problems, retrofitting mistakes, retrofitting for savings, replacements for incandescent bulbs, better exit lights. 1 fig., 1 tab.
Hasterok, L. [Wisconsin Energy Conservation Corp., Madison, WI (United States)
National Synchrotron Light Source II
The National Synchrotron Light Source II (NSLS-II) at the U.S. Department of Energy's Brookhaven National Laboratory is a proposed new state-of-the-art medium energy storage ring designed to deliver world-leading brightness and flux with top-off operation
Steve Dierker
High Performance Outdoor Lighting Accelerator
Hosted by the U.S. Department of Energy (DOE)�s Weatherization and Intergovernmental Programs Office (WIPO), this webinar covered the expansion of the Better Buildings platform to include the newest initiative for the public sector: the High Performance Outdoor Lighting Accelerator (HPOLA).
Near field optical probe for critical dimension measurements
A resonant planar optical waveguide probe for measuring critical dimensions on an object in the range of 100 nm and below is disclosed. The optical waveguide includes a central resonant cavity flanked by Bragg reflector layers with input and output means at either end. Light is supplied by a narrow bandwidth laser source. Light resonating in the cavity creates an evanescent electrical field. The object with the structures to be measured is translated past the resonant cavity. The refractive index contrasts presented by the structures perturb the field and cause variations in the intensity of the light in the cavity. The topography of the structures is determined from these variations. 8 figs.
Stallard, B.R.; Kaushik, S.
On Field Constraint Analysis
We introduce field constraint analysis, a new technique for verifying data structure invariants. A field constraint for a field is a formula specifying a set of objects to which the field can point. Field constraints ...
Wies, Thomas
CSC418 / CSCD18 / CSC2504 Basic Lighting and Reflection 8 Basic Lighting and Reflection
CSC418 / CSCD18 / CSC2504 Basic Lighting and Reflection 8 Basic Lighting and Reflection Up things, on the lighting that illuminates the scene, and on the interaction of light with the objects in the scene. Some of the basic qualitative properties of lighting and object reflectance that we need
Toronto, University of
Light Collages: Lighting Design for Effective Visualization Chang Ha Lee Xuejun Hao Amitabh Varshney
Light Collages: Lighting Design for Effective Visualization Chang Ha Lee Xuejun Hao Amitabh 20742 {chlee, hao, email@example.com ABSTRACT We introduce Light Collages a lighting design system perception of features with lighting that is locally consistent and globally inconsistent. Inspired
Varshney, Amitabh
Enhanced coupling of light from organic light emitting diodes using nanoporous films
Enhanced coupling of light from organic light emitting diodes using nanoporous films H. J. Peng, Y the light extraction efficiency for organic light emitting diode OLED . Nanoporous alumina film was used by Bragg scattering. The corrugated light- emitting diode had two-times the efficiency as compared
Power Quality Improvements in Lighting Systems Mr. Ashish Shrivastava
from early incandescent lamps to present generation light emitting diodes (LEDs). Incandescent light
Kumar, M. Jagadesh
Legislative Directive: EISA 2007, Subtitle B: Lighting Energy Efficiency
Legislative Directive: EISA 2007, Subtitle B: Lighting Energy Efficiency, Sec. 321: Lighting Energy Efficiency
Lighting the Way with Compact Fluorescent Lighting | Department of Energy
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energy UsageAUDITVehicles »Exchange Visitorsfor Shade Landscaping for ShadeLessonsLight
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: VegetationEquipment Surfaces and Interfaces Sample6, 2011 LawrenceEfeedstocks
Frustrated total internal reflection acoustic field sensor
A frustrated total internal reflection acoustic field sensor which allows the acquisition of the acoustic field over an entire plane, all at once. The sensor finds use in acoustic holography and acoustic diffraction tomography. For example, the sensor may be produced by a transparent plate with transparent support members tall enough to support one or more flexible membranes at an appropriate height for frustrated total internal reflection to occur. An acoustic wave causes the membrane to deflect away from its quiescent position and thus changes the amount of light that tunnels through the gap formed by the support members and into the membrane, and so changes the amount of light reflected by the membrane. The sensor(s) is illuminated by a uniform tight field, and the reflection from the sensor yields acoustic wave amplitude and phase information which can be picked up electronically or otherwise.
Kallman, Jeffrey S. (Pleasanton, CA)
Monitored lighting energy savings from dimmable lighting controls in The New York Times Headquarters Building
A. , D�Herdt, P. , 2008, Lighting energy savings in officesLux Europa, 11 th European Lighting Conference, Istanbul,evaluation of the dimmable lighting, automated shading, and
Fernandes, Luis L.
LIGHTING RESEARCH PROGRAM Project 5.4 DALI Lighting Control Device Standard
LIGHTING RESEARCH PROGRAM Project 5.4 DALI Lighting Control Device Standard Development FINAL CONTROL DEVICE STANDARD PROPOSED BY NEMA ......10 TECHNICAL ASSESSMENT REPORT Electronics Co.; Al Lombardi, Leviton Manufacturing Co., Inc.; Mike Stein, Universal Lighting Technologies
Junction-based field emission structure for field emission display
A junction-based field emission display, wherein the junctions are formed by depositing a semiconducting or dielectric, low work function, negative electron affinity (NEA) silicon-based compound film (SBCF) onto a metal or n-type semiconductor substrate. The SBCF can be doped to become a p-type semiconductor. A small forward bias voltage is applied across the junction so that electron transport is from the substrate into the SBCF region. Upon entering into this NEA region, many electrons are released into the vacuum level above the SBCF surface and accelerated toward a positively biased phosphor screen anode, hence lighting up the phosphor screen for display. To turn off, simply switch off the applied potential across the SBCF/substrate. May be used for field emission flat panel displays.
Dinh, Long N. (Concord, CA); Balooch, Mehdi (Berkeley, CA); McLean, II, William (Oakland, CA); Schildbach, Marcus A. (Livermore, CA)
Lighting system with thermal management system
Lighting systems having unique configurations are provided. For instance, the lighting system may include a light source, a thermal management system and driver electronics, each contained within a housing structure. The light source is configured to provide illumination visible through an opening in the housing structure. The thermal management system is configured to provide an air flow, such as a unidirectional air flow, through the housing structure in order to cool the light source. The driver electronics are configured to provide power to each of the light source and the thermal management system.
Arik, Mehmet; Weaver, Stanton; Stecher, Thomas; Seeley, Charles; Kuenzler, Glenn; Wolfe, Jr., Charles; Utturkar, Yogen; Sharma, Rajdeep; Prabhakaran, Satish; Icoz, Tunc
Variable area light reflecting assembly
Device for tracking daylight and projecting it into a building. The device tracks the sun and automatically adjusts both the orientation and area of the reflecting surface. The device may be mounted in either a wall or roof of a building. Additionally, multiple devices may be employed in a light shaft in a building, providing daylight to several different floors. The preferred embodiment employs a thin reflective film as the reflecting device. One edge of the reflective film is fixed, and the opposite end is attached to a spring-loaded take-up roller. As the sun moves across the sky, the take-up roller automatically adjusts the angle and surface area of the film. Additionally, louvers may be mounted at the light entrance to the device to reflect incoming daylight in an angle perpendicular to the device to provide maximum reflective capability when daylight enters the device at non-perpendicular angles.
Howard, Thomas C. (Raleigh, NC)
Device is described for tracking daylight and projecting it into a building. The device tracks the sun and automatically adjusts both the orientation and area of the reflecting surface. The device may be mounted in either a wall or roof of a building. Additionally, multiple devices may be employed in a light shaft in a building, providing daylight to several different floors. The preferred embodiment employs a thin reflective film as the reflecting device. One edge of the reflective film is fixed, and the opposite end is attached to a spring-loaded take-up roller. As the sun moves across the sky, the take-up roller automatically adjusts the angle and surface area of the film. Additionally, louvers may be mounted at the light entrance to the device to reflect incoming daylight in an angle perpendicular to the device to provide maximum reflective capability when daylight enters the device at non-perpendicular angles. 9 figs.
Howard, T.C.
Light-driven phase shifter
A light-driven phase shifter is provided for modulating a transmission light beam. A gaseous medium such as argon is provided with electron energy states excited to populate a metastable state. A tunable dye laser is selected with a wavelength effective to deplete the metastable electron state and may be intensity modulated. The dye laser is directed through the gaseous medium to define a first optical path having an index of refraction determined by the gaseous medium having a depleted metastable electron state. A transmission laser beam is also directed through the gaseous medium to define a second optical path at least partially coincident with the first optical path. The intensity of the dye laser beam may then be varied to phase modulate the transmission laser beam.
Early, James W. (Los Alamos, NM)
Light shield for solar concentrators
A solar receiver unit including a housing defining a recess, a cell assembly received in the recess, the cell assembly including a solar cell, and a light shield received in the recess and including a body and at least two tabs, the body defining a window therein, the tabs extending outward from the body and being engaged with the recess, wherein the window is aligned with the solar cell.
Plesniak, Adam P.; Martins, Guy L.
LED Lighting | Department of Energy
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energy UsageAUDITVehicles »Exchange Visitors HistoryHybridInspectorInvestingJobsLED Lighting
Materials for solid state lighting
Dramatic improvement in the efficiency of inorganic and organic light emitting diodes (LEDs and OLEDs) within the last decade has made these devices viable future energy efficient replacements for current light sources. However, both technologies must overcome major technical barriers, requiring significant advances in material science, before this goal can be achieved. Attention will be given to each technology associated with the following major areas of material research: (1) material synthesis, (2) process development, (3) device and defect physics, and (4) packaging. The discussion on material synthesis will emphasize the need for further development of component materials, including substrates and electrodes, necessary for improving device performance. The process technology associated with the LEDs and OLEDs is very different, but in both cases it is one factor limiting device performance. Improvements in process control and methodology are expected to lead to additional benefits of higher yield, greater reliability and lower costs. Since reliability and performance are critical to these devices, an understanding of the basic physics of the devices and device failure mechanisms is necessary to effectively improve the product. The discussion will highlight some of the more basic material science problems remaining to be solved. In addition, consideration will be given to packaging technology and the need for the development of novel materials and geometries to increase the efficiencies and reliability of the devices. The discussion will emphasize the performance criteria necessary to meet lighting applications, in order to illustrate the gap between current status and market expectations for future product.
Johnson, S.G.; Simmons, J.A.
Recessed Lighting in the Limelight
Recessed downlights are among the most popular installed lighting fixtures for new and remodeled homes. DOE estimates there are at least 350 million currently installed in US homes, and around 20 million are sold each year. A recent California study showed only 0.4 percent of recessed cans used compact fluorescent lamps. Annual reported sales of fluorescent residential recessed downlights nationwide make up no more than three percent of total residential recessed downlight sales. Standard recessed downlights waste energy by leaking conditioned air to unconditioned attic space, and using less efficient, high-heat incandescent bulbs. 33 states have adopted building codes that require recessed cans installed in the building shell to be airtight. To encourage lighting fixture manufacturers to bring to market high-efficiency air-tight recessed cans, DOE is sponsoring the recessed downlights project. PNNL solicited bids for energy efficient recessed downlights meeting the following specifications: They must use pin-based CFLs, have an airtight housing, be IC-rated, use electronic ballasts, and have a light output minimum of 900 initial lumens. PNNL did short- and long-term testing of the submitted lamps and negotiated lower prices for consumer purchase of qualifying models.
Gordon, Kelly L.; McCullough, Jeffrey J.
Broadband light-emitting diode
A broadband light-emitting diode. The broadband light-emitting diode (LED) comprises a plurality of III-V compound semiconductor layers grown on a semiconductor substrate, with the semiconductor layers including a pair of cladding layers sandwiched about a strained-quantum-well active region having a plurality of different energy bandgaps for generating light in a wavelength range of about 1.3-2 .mu.m. In one embodiment of the present invention, the active region may comprise a first-grown quantum-well layer and a last-grown quantum-well layer that are oppositely strained; whereas in another embodiment of the invention, the active region is formed from a short-period superlattice structure (i.e. a pseudo alloy) comprising alternating thin layers of InGaAs and InGaAlAs. The use a short-period superlattice structure for the active region allows different layers within the active region to be simply and accurately grown by repetitively opening and closing one or more shutters in an MBE growth apparatus to repetitively switch between different growth states therein. The broadband LED may be formed as either a surface-emitting LED or as an edge-emitting LED for use in applications such as chemical sensing, fiber optic gyroscopes, wavelength-division-multiplexed (WDM) fiber-optic data links, and WDM fiber-optic sensor networks for automobiles and aircraft.
Fritz, Ian J. (Albuquerque, NM); Klem, John F. (Sandia Park, NM); Hafich, Michael J. (Albuquerque, NM)
A broadband light-emitting diode is disclosed. The broadband light-emitting diode (LED) comprises a plurality of III-V compound semiconductor layers grown on a semiconductor substrate, with the semiconductor layers including a pair of cladding layers sandwiched about a strained-quantum-well active region having a plurality of different energy bandgaps for generating light in a wavelength range of about 1.3--2 {micro}m. In one embodiment of the present invention, the active region may comprise a first-grown quantum-well layer and a last-grown quantum-well layer that are oppositely strained; whereas in another embodiment of the invention, the active region is formed from a short-period superlattice structure (i.e. a pseudo alloy) comprising alternating thin layers of InGaAs and InGaAlAs. The use a short-period superlattice structure for the active region allows different layers within the active region to be simply and accurately grown by repetitively opening and closing one or more shutters in an MBE growth apparatus to repetitively switch between different growth states therein. The broadband LED may be formed as either a surface-emitting LED or as an edge-emitting LED for use in applications such as chemical sensing, fiber optic gyroscopes, wavelength-divisionmultiplexed (WDM) fiber-optic data links, and WDM fiber-optic sensor networks for automobiles and aircraft. 10 figs.
Fritz, I.J.; Klem, J.F.; Hafich, M.J.
Shelf life of five meat products displayed under light emitting diode or fluorescent lighting.
??Light emitting diode (LED) and fluorescent (FLS) lighting effects on enhanced pork loin chops, beef longissimus dorsi and semimembranosus steaks, ground beef, and ground turkey� (more)
Steele, Kyle Stover
Secondary nuclear fragment beams for investigations of relativistic fragmentation of light radioactive nuclei using nuclear photoemulsion at Nuclotron
Slowly extracted relativistic beams of light nuclei and a beam transportation line net system constitute a good base for secondary nuclear beams forming at the LHE accelerator facility. A recent years activity in the field at the Laboratory is connected with a project on study light nuclei structure by means the emulsion technique [1,2]. The paper shortly summarizes results of the work.
P. A. Rukoyatkin; L. N. Komolov; R. I. Kukushkina; V. N. Ramzhin; P. I. Zarubin
Transform-Limited-Pulse Representation of Excitation with Natural Incoherent Light
We study the natural excitation of molecular systems, applicable to, for example, photosynthetic light-harvesting complexes, by natural incoherent light. In contrast with the conventional classical models, we show that the light need not have random character to properly represent the resultant linear excitation. Rather, thermal excitation can be interpreted as a collection of individual events resulting from the system's interaction with individual, deterministic pulsed realizations that constitute the field. The derived expressions for the individual field realizations and excitation events allow for a wave function formalism, and therefore constitute a useful calculational tool to study dynamics following thermal-light excitation. Further, they provide a route to the experimental determination of natural incoherent excitation using pulsed laser techniques.
Chenu, Aur�lia
1 PROJECT REPORT COUPLING OF LIGHT THROUGH FIBER PHY 564 SUBMITTED BY: GAGANDEEP KAUR (952549116 size simplifies connections and also allows the use of lower-cost electronics such as light
La Rosa, Andres H.
Radioluminescent (RL) airfield lighting system program
In 1980, the US Air Force Engineering and Services Center (AFESC) at Tyndall Air Force Base, Florida, requested that the Radioisotope Technology Group of Oak Ridge National Laboratory (ORNL) develop large-scale, tritium-powered, radioluminescent (RL) airfield lighting systems. The RL lighting systems possess the advantages of being portable, requiring no electrical power source, having a long shelf life, and being unaffected by environmental extremes. These characteristics make the RL system well-suited for harsh environments where the cost of electrical power production is high and traditional incandescent airfield lighting systems are difficult to maintain. RL lighting is typically a large-surface-area, low-intensity light source that operates 100% of the time. The RL light sources gradually decrease in brightness over time, so periodic replacement (every 6 to 8 years) is necessary. RL lighting functions best in low ambient light, which provides the high contrast ratios necessary for successful use of these devices. 12 figs., 8 tabs.
Tompkins, J.A. (Westinghouse Electric Corp., Las Vegas, NV (USA)); Haff, K.W.; Schultz, F.J. (Oak Ridge National Lab., TN (USA))
Exciting White Lighting | Department of Energy
Exciting White Lighting Exciting White Lighting April 23, 2010 - 10:27am Addthis Joshua DeLung In the future, your office building's windows might be replaced with windows that...
Energy 101: Lighting Choices | Department of Energy
in your home to energy-saving incandescent, compact fluorescent lamp (CFL), or light emitting diode (LED) bulbs could save you about 50 per year. For more information on lighting...
Portable lamp with dynamically controlled lighting distribution
A double lamp table or floor lamp lighting system has a pair of compact fluorescent lamps (CFLs) arranged vertically with a reflective septum in between. By selectively turning on one or both of the CFLs, down lighting, up lighting, or both up and down lighting is produced. The control system can also vary the light intensity from each CFL. The reflective septum insures that almost all the light produced by each lamp will be directed into the desired light distribution pattern which is selected and easily changed by the user. Planar compact fluorescent lamps, e.g. circular CFLs, particularly oriented horizontally, are preferable. CFLs provide energy efficiency. The lighting system may be designed for the home, hospitality, office or other environments.
Siminovitch, Michael J. (Pinole, CA); Page, Erik R. (Berkeley, CA)
I could talk for days about solid stat lighting, so I'll try not to drive you two nuts. Solid state lightening has three subsets, OLEDs, organic light emitting diodes and quantum...
A light emitting object and its environment
The object that is intentionally produced with the inherent spirit of "Fine Art," will always be placed with a reverence for its setting. "LIGHT GRID" is a light sculpture with flexibility to utilize the environment where ...
Jeibmann, Jon Karl
Low-light-level nonlinear optics with slow light
Electromagnetically induced transparency in an optically thick, cold medium creates a unique system where pulse-propagation velocities may be orders of magnitude less than $c$ and optical nonlinearities become exceedingly large. As a result, nonlinear processes may be efficient at low-light levels. Using an atomic system with three, independent channels, we demonstrate a quantum interference switch where a laser pulse with an energy density of $\\sim23$ photons per $\\lambda^2/(2\\pi)$ causes a 1/e absorption of a second pulse.
Danielle A. Braje; Vlatko Balic; G. Y. Yin; S. E. Harris
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelinesProved ReservesFeet)per Thousand28 198 18 Q 10 14.0 12.2 1.1 QPDF Lighting
Cree LED Lighting Solutions Formerly LED Lighting Fixtures LLF | Open
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 NoPublic Utilities Address: 160Benin:EnergyWisconsin:2003) |Cordova39. It isEnergy Information LED Lighting
Solid-State Lighting-Lighting Facts | Department of Energy
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-Up from the GridwiseSite ManagementSolid-State LightingWebcasts Solid-State
Magnetic Field Safety Magnetic Field Safety
Magnetic Field Safety Training #12;Magnetic Field Safety Strong Magnetic Fields exist around energized magnets. High magnetic fields alone are a recognized hazard only for personnel with certain medical conditions such as pacemakers, magnetic implants, or embedded shrapnel. In addition, high magnetic
McQuade, D. Tyler
Lighting system with heat distribution face plate
Lighting systems having a light source and a thermal management system are provided. The thermal management system includes synthetic jet devices, a heat sink and a heat distribution face plate. The synthetic jet devices are arranged in parallel to one and other and are configured to actively cool the lighting system. The heat distribution face plate is configured to radially transfer heat from the light source into the ambient air.
Arik, Mehmet; Weaver, Stanton Earl; Stecher, Thomas Elliot; Kuenzler, Glenn Howard; Wolfe, Jr., Charles Franklin; Li, Ri
Considering LEDs for Street and Area Lighting
View Jim Brodrick's keynote video from the September 2009 IES Street and Area Lighting Conference in Philadelphia.
Light Water Reactor Sustainability (LWRS) Program
Light Water Reactor Sustainability (LWRS) Program Login Instructions go here. User ID: Password: Log In Forgot your password?...
The Effect of Personal Lighting Controls on Energy use and Occuplant Weel-Being in Offices
?yrs m ? Quasi-realistic laboratory study a l i s m R e a ? Field study Prior NRC Research ? First laboratory experiment Direct parabolic (ceiling perimeter) Direct parabolic (ceiling centre) Task light (undershelf) Indirect... sources, 40% from indirect ? Supported by more recent studiesSupporte or ecen studie Light Right Albany Righ Experiments EE xperim e BC 1 - Parabolic Louvers Best Practice @ 600 lx Best Practice + Switchable Control Dimming Control ent #1...
Veitch, J. A.; Newsham, G. R.; Mancini, S.; Arsenault, C.
An In-Situ Photometric and Energy Analysis of a Sulfur LampLighting System
This paper describes the results of a photometric and energy analysis that was conducted on a new light guide and sulfur lamp system recently installed at the U.S. Department of Energy's Forrestal Building. This novel system couples two high lumen output, high efficiency sulfur lamps to a single 73 m (240 ft.) hollow light guide lined with a reflective prismatic film. The system lights a large roadway and plaza area that lies beneath a section of the building. It has been designed to completely replace the grid of 280 mercury vapor lamps formerly used to light the space. This paper details the results of a field study that characterizes the significant energy savings and increased illumination levels that have been achieved. Comparisons to modeled HID lighting scenarios are also included.
Crawford, Doug; Gould, Carl; Packer, Michael; Rubinstein,Francis; Siminovitch, Michael
Energy Conservation Utilizing Wireless Dimmable Lighting Control
results & discussion Future research #12;2 Background & Motivation Energy Usage & Potential Savings Lighting accounts for 25-30% of energy usage in building electrical systems Energy savings can be generated Energy Efficiency with Personal Lighting Preferences Light level tuning · Generates energy savings
Agogino, Alice M.
STATE OF CALIFORNIA OUTDOOR LIGHTING WORKSHEET CEC-OLTG-2C (Revised 03/10) CALIFORNIA ENERGY COMMISSION 2008 Nonresidential Compliance Forms March 2010 OUTDOOR LIGHTING WORKSHEET (Page 1 of 3) OLTG-2C Project Name: Date: A. LIGHTING POWER ALLOWANCE FOR GENERAL HARDSCAPE AREA WATTAGE ALLOWANCE (AWA) LINEAR
Retail Lighting: Title 24 & Technology Update
Retail Lighting: Title 24 & Technology Update Kelly Cunningham Outreach Director firstname.lastname@example.com California Lighting Technology Center, UC Davis RESEARCH . INNOVATION . PARTNERSHIP Supporting compliance Lighting: Title 24 and Technology Update C00005 Kelly Cunningham April 24,2014 #12;Credit(s) earned
Tabletop Computed Lighting for Practical Digital Photography
Tabletop Computed Lighting for Practical Digital Photography Ankit Mohan, Reynold Bailey, Jonathan Abstract--We apply simplified image-based lighting methods to reduce the equipment, cost, time, and specialized skills required for high-quality photographic lighting of desktop-sized static objects
Lighting market sourcebook for the US
Throughout the United States, in every sector and building type, lighting is a significant electrical end-use. Based on the many and varied studies of lighting technologies, and experience with programs that promote lighting energy-efficiency, there is a significant amount of cost-effective energy savings to be achieved in the lighting end use. Because of such potential savings, and because consumers most often do not adopt cost-effective lighting technologies on their own, programs and policies are needed to promote their adoption. Characteristics of lighting energy use, as well as the attributes of the lighting marketplace, can significantly affect the national pattern of lighting equipment choice and ownership. Consequently, policy makers who wish to promote energy-efficient lighting technologies and practices must understand the lighting technologies that people use, the ways in which they use them, and marketplace characteristics such as key actors, product mix and availability, price spectrum, and product distribution channels. The purpose of this report is to provide policy-makers with a sourcebook that addresses patterns of lighting energy use as well as data characterizing the marketplace in which lighting technologies are distributed, promoted, and sold.
Vorsatz, D.; Shown, L.; Koomey, J.; Moezzi, M.; Denver, A.; Atkinson, B.
Solid State Lighting ECE 198 Lab Manual
will take the role of a consultant to either a large company, a government institution, or an academic A significant fraction of the electricity used in this country is used for lighting applications, whether countries require sources of light, there has been a significant increase in light consumption globally
Wasserman, Daniel M.
Solid State Lighting Semiconductor Spectroscopy & Devices
and fluorescent lamps, are very inefficient in transforming energy into light. Due to upcoming problems in energy % of Earth's total power consumption is used for lighting! Figure 3: Earth at night from space. Evolution inside a semiconductor for light emission. Over 150 years ago... How to achieve white LEDs? Figure 5
Strathclyde, University of
Smart Lighting ERC Industrial Speaker Series
. Stough Director of Solid State Lighting Research Osram Sylvania Abstract: For the past five years or so fixture, etc.), and present problems for the Lighting Company trying to implement LED-based lighting them as the next `filament." Bio: Dr. Matthew Stough is the director of research in Solid-State
Lü, James Jian-Qiang
Bayesian surface estimation for white light interferometry
.firstname.lastname@example.com). 1 #12;The development of white light interferometers for industry was first guidedBayesian surface estimation for white light interferometry Michael Hissmann Fred A. Hamprecht 2004/07/05 Abstract In conventional white light interferometry (WLI) surface estimation, data acquisition is followed
Hamprecht, Fred A.
Energy-efficient lighting system for television
A light control system for a television camera comprises an artificial light control system which is cooperative with an iris control system. This artificial light control system adjusts the power to lamps illuminating the camera viewing area to provide only sufficient artificial illumination necessary to provide a sufficient video signal when the camera iris is substantially open.
Cawthorne, Duane C. (Amarillo, TX)
Physics 4: Introductory Physics Electromagnetism and Light
Physics 4: Introductory Physics Electromagnetism and Light Professor Jeffrey D. Richman Department: Electromagnetism and Light Welcome to Physics 4! What is your goal in life? If it is to become an engineer or to pursue a career in science, this is a key class for you. Understanding electromagnetism and light
Fygenson, Deborah Kuchnir
Waste Toolkit A-Z Light bulbs
Waste Toolkit A-Z Light bulbs Can I recycle light bulbs? It depends what type of bulbs you have of in the normal University waste bins (landfill waste). Energy saving bulbs and fluorescent tubes are classified light bulbs? Standard filament bulbs Put in the waste bin (landfill waste) as these are not classified
Melham, Tom
Energy Conversion: Solid-State Lighting
8 Energy Conversion: Solid-State Lighting E. Kioupakis1,2 , P. Rinke1,3 , A. Janotti1 , Q. Yan1 fraction of the world's energy resources [1]. Lighting has been one of the earliest applications. The inefficiency of existing light sources that waste most of the power they consume is the reason for this large
Light defection due to a charged, rotating body
According to GTR and subsequent developments in the field, it is known that there are three factors namely mass, rotation and charge that can influence the space-time geometry. Accordingly, we discuss the effect of space-time geometry of a charged, rotating body on the motion of the light ray. We obtained the expression for equatorial defection of light due to such a body up to fourth order term. In our expression for defection angle it is clear that charge can influence the path of light ray. We used the null geodesic approach of light ray for our calculation. If we set the charge to zero our expression of bending angle gets reduced to the Kerr equatorial bending angle.If we set rotation to zero our expression reduces to Resinner-Nordstr$\\ddot{o}$m defection angle and if we set both charge and rotation to zero our expression reduces to Schwarzschild bending angle. However, we get non-zero bending angle for a hypothetical massless, rotating, charged body.
Sarani Chakraborty; A. K. Sen
The Orbital Light Curve of Aquila X-1
We obtained R- and I-band CCD photometry of the soft X-ray transient/neutron- star binary Aql X-1 in 1998 June while it was at quiescence. We find that its light curve is dominated by ellipsoidal variations, although the ellipsoidal variations are severely distorted and have unequal maxima. After we correct for the contaminating flux from a field star located only 0.46" away, the peak-to-peak amplitude of the modulation is ~0.25 mag in the R band, which requires the orbital inclination to be greater than 36 degrees. The orbital period we measure is consistent with the 18.95 h period measured by Chevalier & Ilovaisky (1998). During its outbursts the light curve of Aql X-1 becomes single humped. The outburst light curve observed by Garcia et al. (1999) agrees in phase with our quiescent light curve. We show that the single humped variation is caused by a ``reflection effect,'' that is, by heating of the side of the secondary star facing towards the neutron star.
William F. Welsh; Edward L. Robinson; Patrick Young
Superconducting RF Linac Technology for ERL Light Sources
Energy Recovering Linacs (ERLs) offer an attractive alternative as drivers for light sources as they combine the desirable characteristics of both storage rings (high efficiency) and linear accelerators (superior beam quality). Using superconducting RF technology allows ERLs to operate more efficiently because of the inherent characteristics of SRF linacs, namely that they are high gradient-low impedance structures and their ability to operate in the long pulse or CW regime. We present an overview of the physics challenges encountered in the design and operation of ERL based light sources with particular emphasis on those issues related to SRF technology. These challenges include maximizing a cavity�?�?�?�?�?�?�?¢�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?s Qo to increase cryogenic efficiency, maintaining control of the cavity field in the presence of the highest feasible loaded Q and providing adequate damping of the higher-order modes (HOMs). If not sufficiently damped, dipole HOMs can drive the multipass beam breakup (BBU) instability which ERLs are particularly susceptible to. Another challenge involves efficiently extracting the potentially large amounts of HOM power that are generated when a bunch traverses the SRF cavities and which may extend over a high range of frequencies. We present experimental data from the Jefferson Lab FEL Upgrade, a 10 mA ERL light source presently in operation, aimed at addressing some of these issues. We conclude with an outlook towards the future of ERL based light sources.
Chris Tennant
Light Duty Efficient, Clean Combustion
Cummins has successfully completed the Light Duty Efficient Clean Combustion (LDECC) cooperative program with DoE. This program was established in 2007 in support of the Department of Energy's Vehicles Technologies Advanced Combustion and Emissions Control initiative to remove critical barriers to the commercialization of advanced, high efficiency, emissions compliant internal combustion (IC) engines for light duty vehicles. Work in this area expanded the fundamental knowledge of engine combustion to new regimes and advanced the knowledge of fuel requirements for these diesel engines to realize their full potential. All of the following objectives were met with fuel efficiency improvement targets exceeded: (1) Improve light duty vehicle (5000 lb. test weight) fuel efficiency by 10.5% over today's state-of-the-art diesel engine on the FTP city drive cycle; (2) Develop and design an advanced combustion system plus aftertreatment system that synergistically meets Tier 2 Bin 5 NOx and PM emissions standards while demonstrating the efficiency improvements; (3) Maintain power density comparable to that of current conventional engines for the applicable vehicle class; and (4) Evaluate different fuel components and ensure combustion system compatibility with commercially available biofuels. Key accomplishments include: (1) A 25% improvement in fuel efficiency was achieved with the advanced LDECC engine equipped with a novel SCR aftertreatment system compared to the 10.5% target; (2) An 11% improvement in fuel efficiency was achieved with the advanced LDECC engine and no NOx aftertreamtent system; (3) Tier 2 Bin 5 and SFTP II emissions regulations were met with the advanced LDECC engine equipped with a novel SCR aftertreatment system; (4) Tier 2 Bin 5 emissions regulations were met with the advanced LDECC engine and no NOx aftertreatment, but SFTP II emissions regulations were not met for the US06 test cycle - Additional technical barriers exist for the no NOx aftertreatment engine; (5) Emissions and efficiency targets were reached with the use of biodiesel. A variety of biofuel feedstocks (soy, rapeseed, etc.) was investigated; (6) The advanced LDECC engine with low temperature combustion was compatible with commercially available biofuels as evaluated by engine performance testing and not durability testing; (7) The advanced LDECC engine equipped with a novel SCR aftertreatment system is the engine system architecture that is being further developed by the Cummins product development organization. Cost reduction and system robustness activities have been identified for future deployment; (8) The new engine and aftertreatment component technologies are being developed by the Cummins Component Business units (e.g. fuel system, turbomachinery, aftertreatment, electronics, etc.) to ensure commercial viability and deployment; (9) Cummins has demonstrated that the technologies developed for this program are scalable across the complete light duty engine product offerings (2.8L to 6.7L engines); and (10) Key subsystems developed include - sequential two stage turbo, combustions system for low temperature combustion, novel SCR aftertreatment system with feedback control, and high pressure common rail fuel system. An important element of the success of this project was leveraging Cummins engine component technologies. Innovation in component technology coupled with system integration is enabling Cummins to move forward with the development of high efficiency clean diesel products with a long term goal of reaching a 40% improvement in thermal efficiency for the engine plus aftertreatment system. The 40% improvement is in-line with the current light duty vehicle efficiency targets set by the 2010 DoE Vehicle Technologies MYPP and supported through co-operative projects such as the Cummins Advanced Technology Powertrains for Light-Duty Vehicles (ATP-LD) started in 2010.
Donald Stanton
Cummins has successfully completed the Light Duty Efficient Clean Combustion (LDECC) cooperative program with DoE. This program was established in 2007 in support of the Department of Energy�s Vehicles Technologies Advanced Combustion and Emissions Control initiative to remove critical barriers to the commercialization of advanced, high efficiency, emissions compliant internal combustion (IC) engines for light duty vehicles. Work in this area expanded the fundamental knowledge of engine combustion to new regimes and advanced the knowledge of fuel requirements for these diesel engines to realize their full potential. All of the following objectives were met with fuel efficiency improvement targets exceeded: 1. Improve light duty vehicle (5000 lb. test weight) fuel efficiency by 10.5% over today�s state-ofthe- art diesel engine on the FTP city drive cycle 2. Develop & design an advanced combustion system plus aftertreatment system that synergistically meets Tier 2 Bin 5 NOx and PM emissions standards while demonstrating the efficiency improvements. 3. Maintain power density comparable to that of current conventional engines for the applicable vehicle class. 4. Evaluate different fuel components and ensure combustion system compatibility with commercially available biofuels. Key accomplishments include: ? A 25% improvement in fuel efficiency was achieved with the advanced LDECC engine equipped with a novel SCR aftertreatment system compared to the 10.5% target ? An 11% improvement in fuel efficiency was achieved with the advanced LDECC engine and no NOx aftertreamtent system ? Tier 2 Bin 5 and SFTP II emissions regulations were met with the advanced LDECC engine equipped with a novel SCR aftertreatment system ? Tier 2 Bin 5 emissions regulations were met with the advanced LDECC engine and no NOx aftertreatment, but SFTP II emissions regulations were not met for the US06 test cycle � Additional technical barriers exist for the no NOx aftertreatment engine ? Emissions and efficiency targets were reached with the use of biodiesel. A variety of biofuel feedstocks (soy, rapeseed, etc.) was investigated. ? The advanced LDECC engine with low temperature combustion was compatible with commercially available biofuels as evaluated by engine performance testing and not durability testing. ? The advanced LDECC engine equipped with a novel SCR aftertreatment system is the engine system architecture that is being further developed by the Cummins product development organization. Cost reduction and system robustness activities have been identified for future deployment. ? The new engine and aftertreatment component technologies are being developed by the Cummins Component Business units (e.g. fuel system, turbomachinery, aftertreatment, electronics, etc.) to ensure commercial viability and deployment ? Cummins has demonstrated that the technologies developed for this program are scalable across the complete light duty engine product offerings (2.8L to 6.7L engines) ? Key subsystems developed include � sequential two stage turbo, combustions system for low temperature combustion, novel SCR aftertreatment system with feedback control, and high pressure common rail fuel system An important element of the success of this project was leveraging Cummins engine component technologies. Innovation in component technology coupled with system integration is enabling Cummins to move forward with the development of high efficiency clean diesel products with a long term goal of reaching a 40% improvement in thermal efficiency for the engine plus aftertreatment system. The 40% improvement is in-line with the current light duty vehicle efficiency targets set by the 2010 DoE Vehicle Technologies MYPP and supported through co-operative projects such as the Cummins Advanced Technology Powertrains for Light- Duty Vehicles (ATP-LD) started in 2010.
Stanton, Donald W
Testing dissipative magnetosphere model light curves and spectra with FERMI pulsars
We explore the emission properties of a dissipative pulsar magnetosphere model introduced by Kalapotharakos et al. (2014), comparing its high energy light curves and spectra, due to curvature radiation, with data collected by the Fermi LAT. The magnetosphere structure is assumed to be near the force-free solution. The accelerating electric field, inside the light-cylinder, is assumed to be negligible, while outside the light-cylinder it rescales with a finite conductivity ({\\sigma}). In our approach we calculate the corresponding high energy emission by integrating the trajectories of test particles that originate from the stellar surface, taking into account both the accelerating electric field components and the radiation reaction forces. First we explore the parameter space assuming different value sets for the stellar magnetic field, stellar period, and conductivity. We show that the general properties of the model are in a good agreement with observed emission characteristics of young {\\gamma}-ray pulsar...
Brambilla, Gabriele; Harding, Alice K; Kazanas, Demosthenes
Collimated blue light generated by four-wave mixing in Rb vapour
We investigate frequency up-conversion of low power cw resonant radiation in Rb vapour as a function of various experimental parameters. We present evidence that the process of four wave mixing is responsible for unidirectional blue light generation and that the phase matching conditions along a light-induced waveguide determine the direction and divergence of the blue light. Velocity-selective excitation to the 5D level via step-wise and two-photon processes results in a Doppler-free dependence on the frequency detuning of the applied laser fields from the respective dipole-allowed transitions. Possible schemes for ultraviolet generation are discussed.
Alexander M. Akulshin; Russell J. McLean; Andrei I. Sidorov; Peter Hannaford
Internal split field generator
A generator includes a coil of conductive material. A stationary magnetic field source applies a stationary magnetic field to the coil. An internal magnetic field source is disposed within a cavity of the coil to apply a moving magnetic field to the coil. The stationary magnetic field interacts with the moving magnetic field to generate an electrical energy in the coil.
Thundat; Thomas George (Knoxville, TN); Van Neste, Charles W. (Kingston, TN); Vass, Arpad Alexander (Oak Ridge, TN)
Energy Efficiency Through Lighting Upgrades
Lighting upgrades including neon to LED, incandescent to CFL's and T-12 to T-8 and T-5's were completed through this grant. A total of 16 Chickasaw nation facilities decreased their carbon footprint because of these grant funds. Calculations used were based on comparing the energy usage from the previous year�?¢�?�?�?�?s average and the current energy usage. For facilities without a full year's set of energy bills, the month after installation was compared to the same month from the previous year. Overall, the effect the lighting change-outs had for the gaming centers and casinos far exceeded expectations. For the Madill Gaming Center; both an interior and exterior upgrade was performed which resulted in a 31% decrease in energy consumption. This same reduction was seen in every facility that participated in the grant. Just by simply changing out light bulbs to newer energy efficient equivalents, a decrease in energy usage can be achieved and this was validated by the return on investment seen at Chickasaw Nation facilities. Along with the technical project tasks were awareness sessions presented at Chickasaw Head Starts. The positive message of environmental stewardship was passed down to head start students and passed along to Chickasaw employees. Excitement was created in those that learned what they could do to help reduce their energy bills and many followed through and took the idea home. For a fairy low cost, the general public can also use this technique to lower their energy consumption both at home and at work. Although the idea behind the project was somewhat simple, true benefits have been gained through environmental awareness and reductions of energy costs.
Kara Berst; Maria Howeth
Lighting Design | Department of Energy
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGYWomen OwnedofDepartment ofJared Temanson -of Energy 1procedures,Light Water
Lighting Controls | Department of Energy
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-UpHeatMulti-Dimensionalthe10IO1OP001 LetterLight-Duty Lean GDI VehicleComposites
Light Duty Vehicle CNG Tanks
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGY TAX POLICIES7.pdfFuel2007 |KSRS25RV*)Boyd About UsMr. Brian MillsLEVERAGINGfromLight
Sandia National Laboratories: Stray Light
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErikGroundbreakingStandards Solar ThermochemicalStorage Protected:Stray Light
Shedding Light on Nanocrystal Defects
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administrationcontroller systemsBi (2)Sharing Smart Grid Experiences throughandShedding Light on
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administrationcontroller systemsBi (2)Sharing Smart Grid Experiences throughandShedding Light
Department of Mechanical Engineering Spring 2013 Lumax Lighting 2: LED Industrial High Bay Light Fixture
PENNSTATE Department of Mechanical Engineering Spring 2013 Lumax Lighting 2: LED Industrial High Bay Light Fixture Overview The problem that our sponsor, Rich Taylor, presented to the team was to design a light fixture for an industrial setting using high power LED lights. The challenge
Demirel, Melik C.
LIGHTING RESEARCH PROGRAM Project 4.4 Portable Office Lighting Systems
LIGHTING RESEARCH PROGRAM Project 4.4 Portable Office Lighting Systems FINAL REPORT Prepared For, Governor October 2005 CEC-500-2005-141-A13 #12;Portable Office Lighting Systems Final Report Architectural Energy Corporation/CLTC PIER Lighting Research Program ii 500-01-041 CALIFORNIA ENERGY COMMISSION
Metameric Modulation for Diffuse Visible Light Communications with Constant Ambient Lighting
untapped for wireless communications. Advancements in light emitting diode (LED) technology are making
Little, Thomas
Light extraction analysis and enhancement in a quantum dot light emitting diode
Light extraction analysis and enhancement in a quantum dot light emitting diode Ruidong Zhu outcoupling and angular performance of quantum dot light emitting diode (QLED). To illustrate the design principles, we use a red QLED as an example and compare its performance with an organic light emitting diode
Wu, Shin-Tson
The present invention comprises an illumination system for specialized decorative lighting including a light source, a flexible plastic tube sheath for distributing the light to a remote location, a transparent liquid core filling the tube that has an index of refraction greater than that of the plastic tube and an arrangement where light coupled from the light source is caused to leak from the liquid light guide at desired locations for the purposes of specialized lighting, such as underwater illumination in swimming pools. 5 figs.
Zorn, C.J.; Kross, B.J.; Majewski, S.; Wojcik, R.F.
Lighting Market Sourcebook for the U.S.
Potentials: Analysis of the Lighting Sector. Doctoral1996b. Residential Lighting: Use and Potential Savings.1993. Research for "The Lighting Pattern Book for Homes",
Product Quality Assurance for Off-Grid Lighting in Africa
Jeffrey Miller Pivotal Lighting Design 1601 Fifth Avenueaffordable, sustainable, lighting available to the millionsable to realize modern lighting options. R; Doluweera Peon,
Mills, Evan; World Bank
Effect of Research on Lighting for Modern Dance
Print. Staines, Jackie. Lighting Techniques for Theatre In-Bibliography Graves, R. B. Lighting The Shakespearean Stage,Stanley. A Syllabus of Stage Lighting. New York: Drama Books
Grabowski, Andrew
The perception of shape, lighting, and material properties in images
the true lighting direction. . . . . . . . . . . . . . . .rep- resent different lighting tilts on the test object. Thedirection. We found the lighting used in the center image
O'Shea, James Patrick
Stochastically Lighting Up Galaxies: Statistical Implications of Stellar Clustering
SANTA CRUZ STOCHASTICALLY LIGHTING UP GALAXIES: STATISTICAL2 SLUG - Stochastically Lighting Up Galaxies: Methods andx Abstract Stochastically Lighting Up Galaxies: Statistical
da Silva, Robert Louis
How Do You Light Your Home Efficiently? | Department of Energy
using task lighting, flipping the switch, and taking advantage of natural daylight can all help you save on your lighting costs. How do you light your home efficiently?...
Bay Bridge Lights Presentation prepared by Zoon Engineering
2015 BAY BRIDGE LIGHTS Presentation prepared by Zoon Engineering Presentation Outline Lighting of the New East Span of the Bay Bridge Brief Over view Lighting Facts ...
Simulation for Pre-Visualizing and Tuning Lighting Controller Behavior
daylighting and lighting control algorithms for a given space. Keywords: smart buildings, smart lighting, glazing, and shading devices have been decided. This prevents the early exploration of lighting
Radke, Rich
Chapter 6, Residential Lighting Evaluation Protocol: The Uniform...
STAR lighting fixtures. More recently, programs are introducing solid-state light-emitting diode (LED) lamps. The future of savings claims from residential lighting programs is...
Technology Development for Light Duty High Efficient Diesel Engines...
Light Duty High Efficient Diesel Engines Technology Development for Light Duty High Efficient Diesel Engines Improve the efficiency of diesel engines for light duty applications...
Energy Department Announces Indoor Lighting Winners of Next Generation...
was launched in 2008 to promote excellence in the design of energy-efficient light-emitting diode (LED) commercial lighting fixtures or "luminaires." Solid-state lighting...
Cathode R&D for Future Light Sources
This paper reviews the requirements and current status of cathodes for accelerator applications, and proposes a research and development plan for advancing cathode technology. Accelerator cathodes need to have long operational lifetimes and produce electron beams with a very low emittance. The two principal emission processes to be considered are thermionic and photoemission with the photocathodes being further subdivided into metal and semi-conductors. Field emission cathodes are not included in this analysis. The thermal emittance is derived and the formulas used to compare the various cathode materials. To date, there is no cathode which provides all the requirements needed for the proposed future light sources. Therefore a three part research plan is described to develop cathodes for these future light source applications.
Dowell, D.H.; /SLAC; Bazarov, I.; Dunham, B.; /Cornell U., CLASSE; Harkay, K.; /Argonne; Hernandez-Garcia; /Jefferson Lab; Legg, R.; /Wisconsin U., SRC; Padmore, H.; /LBL, Berkeley; Rao, T.; Smedley, J.; /Brookhaven; Wan, W.; /LBL, Berkeley
Scattering of infrared light by dielectric core-shell particles
We study the scattering of infrared light by small dielectric core-shell particles taking a sapphire sphere with a CaO core as an example. The extinction efficiency of such a particle shows two intense series of resonances attached, respectively, to in-phase and out-of-phase multipolar polarization-induced surface charges build-up, respectively, at the core-shell and the shell-vacuum interface. Both series, the character of the former may be labelled bonding and the character of the latter antibonding, give rise to anomalous scattering. For a given particle radius and filling factor the Poynting vector field shows therefore around two wave numbers the complex topology of this type of light scattering. Inside the particle the topology depends on the character of the resonance. The dissipation of energy inside the particle also reflects the core-shell structure. It depends on the resonance and shows strong spatial variations.
Thiessen, E; Heinisch, R L; Fehske, H
Mimicking interacting relativistic theories with stationary pulses of light
One of the most well known relativistic field theory models is the Thirring model (TM). Its realization can demonstrate the famous prediction for the renormalization of mass due to interactions. However, experimental verification of the latter requires complex accelerator experiments whereas analytical solutions of the model can be extremely cumbersome to obtain. In this work, following Feynman's original proposal, we propose a alternative quantum system as a simulator of the TM dynamics. Here the relativistic particles are mimicked, counter-intuitively, by polarized photons in a quantum nonlinear medium. We show that the entire set of regimes of the Thirring model -- bosonic or fermionic, and massless or massive -- can be faithfully reproduced using coherent light trapping techniques. The sought after correlations' scalings can be extracted by simple probing of the coherence functions of the light using standard optical techniques.
Dimitris G. Angelakis; MingXia Huo; Darrick Chang; Leong Chuan Kwek; Vladimir Korepin
Numerical analysis of nanostructures for enhanced light extraction from OLEDs
Nanostructures, like periodic arrays of scatters or low-index gratings, are used to improve the light outcoupling from organic light-emitting diodes (OLED). In order to optimize geometrical and material properties of such structures, simulations of the outcoupling process are very helpful. The finite element method is best suited for an accurate discretization of the geometry and the singular-like field profile within the structured layer and the emitting layer. However, a finite element simulation of the overall OLED stack is often beyond available computer resources. The main focus of this paper is the simulation of a single dipole source embedded into a twofold infinitely periodic OLED structure. To overcome the numerical burden we apply the Floquet transform, so that the computational domain reduces to the unit cell. The relevant outcoupling data are then gained by inverse Flouqet transforming. This step requires a careful numerical treatment as reported in this paper.
Zschiedrich, L; Burger, S; Schmidt, F; 10.1117/12.2001132
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