Texas, Austin by Professor Andrea Alù. The metascreen consisted of a 66 micrometre thick polycarbonate film supporting an arrangement of 20 micrometer thick copper strips that resembled a fishing net. In the experiment, when the metascreen was hit by 3.6 GHz microwaves, it re-radiated microwaves of the same frequency that were out of phase, thus cancelling out reflections from the object being hidden. The device only cancelled out the scattering of microwaves in the first order. The same researchers published a paper on "plasmonic cloaking" the previous year. Howell/Choi cloaking device University of Rochester physics professor John Howell and graduate student Joseph Choi have announced a scalable cloaking device which uses common optical lenses to achieve visible light cloaking on the macroscopic scale, known as the "Rochester Cloak". The device consists of a series of four lenses which direct light rays around objects which would otherwise occlude the optical pathway. Cloaking in mechanics The concepts of cloaking are not limited to optics but can also be transferred to other fields of physics. For example, it was possible to cloak acoustics for certain frequencies as well as touching in mechanics. This renders an object "invisible" to sound or even hides it from touching. See also Invisibility Cloak of invisibility Metamaterial Philadelphia Experiment References Mosnews - Dr Oleg Gadomsky Cloaking Device Article "MSNBC: Can objects be turned invisible?" Optical Camouflage by the Tachi Lab in Japan Space Daily - Engineers Create Optical Cloaking Design For Invisibility, April, 2007 External links University of Texas at Austin, Cockrell School of Engineering, Researchers at UT Austin Create an Ultrathin Invisibility Cloak, 26 March 2013. New Journal of Physics, "Demonstration of an ultralow profile cloak for scattering suppression of a finite-length rod in free space", by JC Soric, PY Chen, A Kerkhoff, D Rainwater, K Melin, and Andrea Alù, March 2013. New Journal of Physics, "Experimental verification of three-dimensional plasmonic cloaking in free-space", by D Rainwater, A Kerkhoff, K Melin, J C Soric, G Moreno and Andrea Alù, January 2012. Physical Review X, "Do Cloaked Objects Really Scatter Less", by Francesco Monticone and Andrea Alù, October 2013. Fictional technology Hypothetical technology Invisibility Science fiction themes Star Trek devices Theoretical physics Fiction about invisibility Stealth technology fr:Bouclier occulteur