Optical dispersion occurs when the refractive index of a material changes with the wavelength of incoming light. This variation causes different colors to move at different speeds in transparent media ...

In 1967 the Russian physicist Victor Veselago predicted the existence of a material with a negative index of refraction, which he termed “left-handed.” He concluded that in the presence of such a ...

Time-varying systems, materials with properties that change over time, have opened new possibilities for the experimental ...

Abstract: In this work, we present an asymmetric transmission structure composed of a dielectric grating laying over a stack of several perforated metallic plates that operate at the extraordinary ...

We have again elucidated the mechanism of Bloch wave refraction in electron diffraction and shown that the phase term of the deviated diffraction peaks by high energy electrons will disappear in the ...