Document Type
Article
Publication Date
11-24-2022
Abstract
The quasi-particle linked to mechanical vibration, namely the phonon, is responsible for everyday sound and heat transmission in air, water and other media. Hence, investigating and controlling the phononic properties of materials provides new opportunities and powerful tools to tailor acoustic wave propagation and heat transport. During the past few decades, there has been considerable interest in studying theoretically and experimentally the acoustic, elastodynamic and thermal properties of artificial media made of small inclusions. These metamaterials are engineered to exhibit exotic properties beyond what naturally occurs in materials, including negative bulk-modulus, zero/negative density and infinite thermal conductivity. Many tantalizing concepts and counterintuitive effects have been realized with these well-designed artificial structures, including diodes, cloaking, superlens, negative refraction, and topological transport.
Comments
This article was originally published in Frontiers in Physics, available at https://www.frontiersin.org/articles/10.3389/fphy.2022.1078449
This work is distributed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).