We review the basic physics and applications of a special class of planar metamaterials,
often called metasurfaces, which are composed of optically thin and densely packed planar …

Optical metamaterials have presented an innovative method of manipulating light.
Hyperbolic metamaterials have an extremely high anisotropy with a hyperbolic dispersion …

Metasurfaces have become a rapidly growing field of research in recent years due to their
exceptional abilities in light manipulation and versatility in ultrathin optical applications. They …

Manipulating the properties of the isofrequency contours (IFCs) of materials provides a
powerful means of controlling the interaction between light and matter. Hyperbolic …

Polaritons are a hybrid class of quasiparticles originating from the strong and resonant
coupling between light and matter excitations. Recent years have witnessed a surge of …

Motivated by the recent emergence of a new class of anisotropic 2D materials, we examine
their electromagnetic modes and demonstrate that a broad class of the materials can host …

In this Perspective, we discuss the physics and potential applications of planar hyperbolic
metasurfaces (MTSs), with emphasis on their in-plane and near-field responses. After …

A hyperbolic plasmonic surface supports highly directional propagating polaritons with
extremely large density of states. Such plasmon polaritons have been realized in artificially …

Polaritons–coupled excitations of photons and dipolar matter excitations–can propagate
along anisotropic metasurfaces with either hyperbolic or elliptical dispersion. At the …

Anisotropic crystals have recently attracted considerable attention because of their ability to
support polaritons with a variety of unique properties, such as hyperbolic dispersion …