When molecules are placed at the interface to metals or metal oxides, an increase in their
infrared (IR) spectral intensities is observed, a phenomenon termed surface-enhanced …

Polaritons, originating from the interactions between photons and material excitations, have
attracted attention because of their strong field compression and deeply subdiffractional …

Hyperbolic media have attracted much attention in the photonics community due to their
ability to confine light to arbitrarily small volumes and their potential applications to super …

One of the fastest-expanding study areas in optics over the past decade has been
metasurfaces (MSs). These subwavelength meta-atom-based ultrathin arrays have been …

Controlling the twist angle between two stacked van der Waals (vdW) crystals is a powerful
approach for tuning their electronic and photonic properties. Hyperbolic media have recently …

Abstract 2D van der Waals (vdW) layered polar crystals sustaining phonon polaritons (PhPs)
have opened up new avenues for fundamental research and optoelectronic applications in …

Highly confined and low-loss polaritons are known to propagate isotropically over graphene
and hexagonal boron nitride in the plane, leaving limited degrees of freedom in …

Grain boundaries (GBs) are a kind of lattice imperfection widely existing in two-dimensional
materials, playing a critical role in materials' properties and device performance. Related key …

This paper proposes a tunable graphene-based wideband metasurface for high absorption
in the lower mid-infrared frequency region. The unit cell of the proposed structure consists of …

Abstract Two-dimensional (2D) materials such as graphene and transition-metal
chalcogenides have been extensively studied because of their superior electronic and …