Luneburg lens is a gradient index (GRIN) element [1] known to produce diffraction-limited focus at the lens edge opposite to…
In recent years there has been significant interest in broadband, omnidirectional antireflection (AR) nanostructures that minimize Fresnel reflection due to…
Selective detection of explosive compounds is critical for national defense and homeland security. Nitroaromatic compounds pose a particular threat; 2,4,6-trinitrotoluene…