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Acoustic edge mode in spiral-based metamaterials at subwavelength scale

文献类型：期刊论文

作者Yang T(杨洮); Xiao BY(肖伯雅); Feng YF(冯亚飞); Pei DL(裴东亮); Liu Y(刘宇); Chen M(陈猛); Jiang H(姜恒); Zheng ZY(郑中玉); Wang YR(王育人)
刊名RESULTS IN PHYSICS
出版日期2022-11
卷号42页码:106008
关键词Spiral structure Subwavelength Topological phononic crystal
ISSN号2211-3797
DOI10.1016/j.rinp.2022.106008
英文摘要Recently, the quantum effect of condensed matter physics is introduced into the acoustic field, which lays a new pathway to manipulate the acoustic wave. However, the acoustic topological insulator based on Bragg scattering requires their lattice constant to be comparable with the wavelength. In this paper, a 11el subwavelength spiral element on the basis of the Archimedean spiral is proposed. Thanks to the central resonator with a slender curved channels scheme, the subwavelength Dirac cone forms in the band structure. The eigenfrequency of the element can be changed by the spiral geometric parameters, which triggers the topological phase transition characterized by opposite valley Chern numbers. The backscattering-immune unidirectional transmission edge state exists at different topological boundaries, suggesting its great robustness even at the sharp bends. Also the topological edge modes along the Z-shaped interfaces are verified by the experiments and the calculation, which provides an effective structure to control the low frequency acoustic wave transmission.
学科主题Materials Science, Multidisciplinary ; Physics, Multidisciplinary
分类号二类/Q1
语种英语
WOS记录号WOS:000862583600007
资助机构National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Research Program of Beijing ; Youth In11ation Promotion Association of the Chinese Academy of Science ; [11972034] ; [XDB22040301] ; [Z161100002616034] ; [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.
源URL[http://dspace.imech.ac.cn/handle/311007/90217]  
专题力学研究所_国家微重力实验室
作者单位1.Chinese Peoples Liberat Army, Units 92228, Beijing 100072, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Mech, Key Lab Micrograv, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 Yang T,Xiao BY,Feng YF,et al. Acoustic edge mode in spiral-based metamaterials at subwavelength scale[J]. RESULTS IN PHYSICS,2022,42:106008.
APA 杨洮.,肖伯雅.,冯亚飞.,裴东亮.,刘宇.,...&王育人.(2022).Acoustic edge mode in spiral-based metamaterials at subwavelength scale.RESULTS IN PHYSICS,42,106008.
MLA 杨洮,et al."Acoustic edge mode in spiral-based metamaterials at subwavelength scale".RESULTS IN PHYSICS 42(2022):106008.

入库方式： OAI收割

来源：力学研究所

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