Acoustic resonances in non-Hermitian open systems
Acoustic resonances in non-Hermitian open systems
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DOI：
10.1038/s42254-023-00659-z
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发表时间：
2023-11
影响因子：
38.5
通讯作者：
Lujun Huang;Sibo Huang;Chen Shen;Simon Yves;A. Pilipchuk;Xiang Ni;Seunghwi Kim;Chiang Kei Yan-Chiang-Kei-Y
中科院分区：
文献类型：
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作者：
Lujun Huang;Sibo Huang;Chen Shen;Simon Yves;A. Pilipchuk;Xiang Ni;Seunghwi Kim;Chiang Kei Yan-Chiang-Kei-Y
开放系统中的声共振，通常与以复本征频率为特征的共振模式相关联，在操纵声波辐射和传播中起着基本作用。值得注意的是，它们伴随着相当大的场增强，增强了波和物质之间的相互作用，并导致各种令人兴奋的应用。在过去的二十年中，声学超材料已经实现了对在一定频率范围内定制声学共振的高度控制。在这里，我们提供了非厄米开放系统中的声学共振领域的最新进展，包括亥姆霍兹共振器，超材料和超颖表面的概述，并讨论了它们在各种声学器件中的应用，包括吸声器，声源，涡流束产生和成像。我们还讨论了连续介质中的束缚态及其在增强声波-物质相互作用，主动声子和非厄米声学共振，包括声子拓扑绝缘体和声学趋肤效应中的应用。
Acoustic resonances in open systems, which are usually associated with resonant modes characterized by complex eigenfrequencies, play a fundamental role in manipulating acoustic wave radiation and propagation. Notably, they are accompanied by considerable field enhancement, boosting interactions between waves and matter, and leading to various exciting applications. In the past two decades, acoustic metamaterials have enabled a high degree of control over tailoring acoustic resonances over a range of frequencies. Here, we provide an overview of recent advances in the area of acoustic resonances in non-Hermitian open systems, including Helmholtz resonators, metamaterials and metasurfaces, and discuss their applications in various acoustic devices, including sound absorbers, acoustic sources, vortex beam generation and imaging. We also discuss bound states in the continuum and their applications in boosting acoustic wave–matter interactions, active phononics and non-Hermitian acoustic resonances, including phononic topological insulators and the acoustic skin effect.