We fabricate and characterize a metal-dielectric nanostructure with an effective refractive
index n= 0 in the visible spectral range. Light is excited in the material at deep …

Abstract Epsilon-near-zero (ENZ) materials that operate in the spectral region where the real
part of the permittivity crosses zero have recently emerged as a promising platform for all …

We introduce the acoustic equivalent of “supercoupling” by studying the anomalous sound
transmission and uniform energy squeezing through ultranarrow acoustic channels filled …

We show that two-dimensional acoustic crystals (ACs) can be designed to exhibit Dirac cone
dispersion at k→= 0⁠. Effective medium theory finds that some of these ACs can have …

We study metamaterials with an anisotropic permittivity tensor in which one component is
near zero. We find that such an anisotropic metamaterial can be used to control wave …

Metamaterials with metal conductive phase always suffer from their high negative permittivity
(epsilon-negative), the mechanism of negative permittivity is still need to be explored …

Molecular emission enhancement is generally obtained by proper coupling with external
resonances. Here we propose the idea of a plasmonic nanolauncher, ie, a metamaterial …

Research into epsilon near zero (ENZ) materials has enhanced the capabilities of
metastructures, leading to unique optical properties such as perfect light absorption, non …

Zero-index materials exhibit exotic optical properties that can be utilized for integrated-optics
applications. However, practical implementation requires compatibility with complementary …

The manipulation of optical waves in the subwavelength scale is limited by diffraction. In the
vicinity of a narrow aperture, the amplitude of the electric field is approximately uniform and …