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Title: Topological acoustics
Authors: Xue, Haoran
Yang, Yihao
Zhang, Baile
Keywords: Science::Physics
Issue Date: 2022
Source: Xue, H., Yang, Y. & Zhang, B. (2022). Topological acoustics. Nature Reviews Materials.
Project: NRF-CRP23-2019-0007
Journal: Nature Reviews Materials
Abstract: Topological acoustics is an emerging field that lies at the intersection of condensed matter physics, mechanical structural design and acoustics engineering. It explores the design and construction of novel artificial structures, such as acoustic metamaterials and phononic crystals, to manipulate sound waves robustly, taking advantage of topological protection. Early work on topological acoustics was limited to duplicating topological phases that have been understood in condensed matter systems, but recent advances have shifted to exploring new topological concepts that are difficult to realize in other physical systems, such as various topological semimetal phases, and topological phases associated with Floquet engineering, fragile topology, non-Hermiticity and synthetic dimensions. These developments demonstrate the unique advantages of topological acoustic systems and their role in developing topological physics. In this Review, we survey the fundamental mechanisms, basic designs and practical realizations of topological phases in acoustic systems and provide an overview of future directions and potential applications.
ISSN: 2058-8437
DOI: 10.1038/s41578-022-00465-6
Rights: © 2022 Springer Nature Limited. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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