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Subwavelength Chiral Spiral Acoustic Metamaterials for a Robust Topological Acoustic Insulator

文献类型：期刊论文

作者Yang T(杨洮); Chen M(陈猛); Xiao BY(肖伯雅); Liu Y(刘宇); Jiang H(姜恒); Wang YR(王育人); Wang YR(王育人); Jiang H(姜恒); Chen M(陈猛); Yang T(杨洮)
刊名APPLIED SCIENCES-BASEL ; 15
出版日期2022-08
卷号12页码:7778
关键词chiral spiral structure acoustic metamaterials topological transportation
DOI10.3390/app12157778
英文摘要Topological acoustic insulators enable sound waves to transmit along the surface without backscattering, which builds a new pathway towards sound wave control. However, a large share of topological acoustic insulators are realized based on special point group symmetry and Bragg scattering mechanism. This method not only exerts a restriction on the unit cell design but also requires the lattice constant to be comparable with the wavelength. In this paper, the chiral spiral acoustic metamaterials are constructed based on an Archimedean spiral structure. This structure enjoys subwavelength characteristics and is easy to construct. Taking advantage of the chirality of the spiral structure topological phases with opposite energy flow direction can be constructed. The edge state is formed at the interface composed of the spiral units sharing different chirality, which does not depend on point group symmetry. The topological transportation on the interfaces shows strong robustness despite sharp corners verified by straight and zigzag waveguides. The topological acoustic insulator with a chiral spiral structure provides a 11el strategy for small acoustic devices with robust sound transmission.
学科主题Chemistry, Multidisciplinary ; Engineering, Multidisciplinary ; Materials Science, Multidisciplinary ; Physics, Applied
分类号二类
语种英语
WOS记录号WOS:000840160300001
资助机构Research Program of Beijing [Z161100002616034] ; National Natural Science Foundation of China [11972034] ; Strategic Priority Research Program of the Chinese Academy of Sciences [XDB22040301] ; Youth In11ation Promotion Association of the Chinese Academy of Science [2020018]
其他责任者Chen, M ; Jiang, H (corresponding author), Chinese Acad Sci, Inst Mech, Key Lab Micrograv, Beijing 100190, Peoples R China. ; Chen, M ; Jiang, H (corresponding author), Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
源URL[http://dspace.imech.ac.cn/handle/311007/90148]  
专题力学研究所_国家微重力实验室
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Mech, Key Lab Micrograv, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 Yang T,Chen M,Xiao BY,et al. Subwavelength Chiral Spiral Acoustic Metamaterials for a Robust Topological Acoustic Insulator[J]. APPLIED SCIENCES-BASEL, 15,2022,12:7778.
APA 杨洮.,陈猛.,肖伯雅.,刘宇.,姜恒.,...&Liu Y.(2022).Subwavelength Chiral Spiral Acoustic Metamaterials for a Robust Topological Acoustic Insulator.APPLIED SCIENCES-BASEL,12,7778.
MLA 杨洮,et al."Subwavelength Chiral Spiral Acoustic Metamaterials for a Robust Topological Acoustic Insulator".APPLIED SCIENCES-BASEL 12(2022):7778.

入库方式： OAI收割

来源：力学研究所

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