Acoustic spin Hall-like effect in hyperbolic metamaterials controlled by the helical wave

Abstract Because of the spin-less nature of sound, acoustic helical wave with different helical directions can be taken as a “spin-like” degree of freedom. In this Letter, we examine the pseudospin-orbit coupling effect in acoustics when an acoustic helical wave emitter interacts with the acoustic h...

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Autores principales:	Fangfang Ju, Ying Cheng, Xiaojun Liu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/05b28b10d51040169cb1e956cf539c0a
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spelling	oai:doaj.org-article:05b28b10d51040169cb1e956cf539c0a2021-12-02T15:07:49ZAcoustic spin Hall-like effect in hyperbolic metamaterials controlled by the helical wave10.1038/s41598-018-29359-w2045-2322https://doaj.org/article/05b28b10d51040169cb1e956cf539c0a2018-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-29359-whttps://doaj.org/toc/2045-2322Abstract Because of the spin-less nature of sound, acoustic helical wave with different helical directions can be taken as a “spin-like” degree of freedom. In this Letter, we examine the pseudospin-orbit coupling effect in acoustics when an acoustic helical wave emitter interacts with the acoustic hyperbolic metamaterial (AHMM). The acoustic helical wave emitter is situated at the boundary of the AHMM, which gives rise to the unidirectional excitation with the trajectory controlled by the helical directions, and hence the acoustic spin Hall-like effect (ASHE) is observed. The ASHE is further demonstrated for the string-type and the membrane-type AHMM based on the hyperbolic dispersion. The reported ASHE paves a new way to exploiting signal routing and unidirectional excitation controlled by the helical directions of the acoustic helical wave.Fangfang JuYing ChengXiaojun LiuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-7 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Fangfang Ju Ying Cheng Xiaojun Liu Acoustic spin Hall-like effect in hyperbolic metamaterials controlled by the helical wave
description	Abstract Because of the spin-less nature of sound, acoustic helical wave with different helical directions can be taken as a “spin-like” degree of freedom. In this Letter, we examine the pseudospin-orbit coupling effect in acoustics when an acoustic helical wave emitter interacts with the acoustic hyperbolic metamaterial (AHMM). The acoustic helical wave emitter is situated at the boundary of the AHMM, which gives rise to the unidirectional excitation with the trajectory controlled by the helical directions, and hence the acoustic spin Hall-like effect (ASHE) is observed. The ASHE is further demonstrated for the string-type and the membrane-type AHMM based on the hyperbolic dispersion. The reported ASHE paves a new way to exploiting signal routing and unidirectional excitation controlled by the helical directions of the acoustic helical wave.
format	article
author	Fangfang Ju Ying Cheng Xiaojun Liu
author_facet	Fangfang Ju Ying Cheng Xiaojun Liu
author_sort	Fangfang Ju
title	Acoustic spin Hall-like effect in hyperbolic metamaterials controlled by the helical wave
title_short	Acoustic spin Hall-like effect in hyperbolic metamaterials controlled by the helical wave
title_full	Acoustic spin Hall-like effect in hyperbolic metamaterials controlled by the helical wave
title_fullStr	Acoustic spin Hall-like effect in hyperbolic metamaterials controlled by the helical wave
title_full_unstemmed	Acoustic spin Hall-like effect in hyperbolic metamaterials controlled by the helical wave
title_sort	acoustic spin hall-like effect in hyperbolic metamaterials controlled by the helical wave
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/05b28b10d51040169cb1e956cf539c0a
work_keys_str_mv	AT fangfangju acousticspinhalllikeeffectinhyperbolicmetamaterialscontrolledbythehelicalwave AT yingcheng acousticspinhalllikeeffectinhyperbolicmetamaterialscontrolledbythehelicalwave AT xiaojunliu acousticspinhalllikeeffectinhyperbolicmetamaterialscontrolledbythehelicalwave
_version_	1718388363148394496

Acoustic spin Hall-like effect in hyperbolic metamaterials controlled by the helical wave

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