Issue 46, 2022

Two-dimensional natural hyperbolic materials: from polaritons modulation to applications

Abstract

Natural hyperbolic materials (HMs) in two dimensions (2D) have an extraordinarily high anisotropy and a hyperbolic dispersion relation. Some of them can even sustain hyperbolic polaritons with great directional propagation and light compression to deeply sub-wavelength scales due to their inherent anisotropy. Herein, the anisotropic optical features of 2D natural HMs are reviewed. Four hyperbolic polaritons (i.e., phonon polaritons, plasmon polaritons, exciton polaritons, and shear polaritons) as well as their generation mechanism are discussed in detail. The natural merits of 2D HMs hold promise for practical quantum photonic applications such as valley quantum interference, mid-infrared polarizers, spontaneous emission enhancement, near-field thermal radiation, and a new generation of optoelectronic components, among others. The conclusion of these analyses outlines existing issues and potential interesting directions for 2D natural HMs. These findings could spur more interest in anisotropic 2D atomic crystals in the future, as well as the quick generation of natural HMs for new applications.

Graphical abstract: Two-dimensional natural hyperbolic materials: from polaritons modulation to applications

Supplementary files

Article information

Article type
Review Article
Submitted
28 Jul 2022
Accepted
20 Oki 2022
First published
20 Oki 2022

Nanoscale, 2022,14, 17096-17118

Two-dimensional natural hyperbolic materials: from polaritons modulation to applications

G. Jia, J. Luo, H. Wang, Q. Ma, Q. Liu, H. Dai and R. Asgari, Nanoscale, 2022, 14, 17096 DOI: 10.1039/D2NR04181B

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