Browsing Articles by Subject "Optics"

Now showing items 1-2 of 2

Epsilon-near-zero behavior from plasmonic Dirac point: Theory and realization using two-dimensional materials

Mattheakis, Marios; Valagiannopoulos, Constantinos; Kaxiras, Efthimios (Physical Review B. American Physical Society, 2016)

The electromagnetic response of a two-dimensional metal embedded in a periodic array of a dielectric host can give rise to a plasmonic Dirac point that emulates epsilon-near-zero (ENZ) behavior. This theoretical result ...
Parity-Time Symmetric Nonlocal Metasurfaces: All-Angle Negative Refraction and Volumetric Imaging

Monticone, Francesco; Valagiannopoulos, Constantinos; Alù, Andrea (American Physical Society. Physical Review X, 2016)

Lens design for focusing and imaging has been optimized through centuries of developments; however, conventional lenses, even in their most ideal realizations, still suffer from fundamental limitations, such as limits ...