where Ψ i and Ψ j are the wave functions of the molecular vibrational modes in the ground and excited states, respectively, μ is the dipole moment operator, µ 0 is the dipole moment at the equilibrium position, Q k is the small displacement, dτ is the total volume, ν is the frequency of light, N A is the Avogadro's and h is the Planck's constant, c is the speed of light, ε 0 is the permittivity of the vacuum. The last term in Eqn. 1 is the transition moment M. This is the change in the dipole moment of the molecular vibra-epoxy type negative photo resist , and OMR-100, a negativetype photo-resist based on poly-isoprene . Figure (b) shows the optical absorption spectra of these polymers. The IR absorption is characteristic to the materials, especially because of the specific f unctional g roups a nd w as c hoice o f t he I -Insulator section of the MIM metaurface (Fig. ).