Acoustic edge mode in spiral-based metamaterials at subwavelength scale

doi:10.1016/j.rinp.2022.106008

	Acoustic edge mode in spiral-based metamaterials at subwavelength scale
	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
	2022-11
卷号	42 页码:106008
关键词	Spiral structure Subwavelength Topological phononic crystal
ISSN号	2211-3797
DOI	10.1016/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.
内容类型	期刊论文
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.