Magnetic-control multifunctional acoustic metasurface for reflected wave manipulation at deep subwavelength scale

Abstract Acoustic metasurfaces, exhibiting superior performance with subwavelength thickness, are ideal alternatives for functionalities such as wavefront modulation and acoustic energy trapping, etc. However, most of the reported acoustic metasurfaces were passive. Here a magnetically tuned mechani...

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Autores principales:	Xing Chen, Peng Liu, Zewei Hou, Yongmao Pei
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/aa13c41acda845088e6d05573d1be73c
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spelling	oai:doaj.org-article:aa13c41acda845088e6d05573d1be73c2021-12-02T16:08:00ZMagnetic-control multifunctional acoustic metasurface for reflected wave manipulation at deep subwavelength scale10.1038/s41598-017-09652-w2045-2322https://doaj.org/article/aa13c41acda845088e6d05573d1be73c2017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-09652-whttps://doaj.org/toc/2045-2322Abstract Acoustic metasurfaces, exhibiting superior performance with subwavelength thickness, are ideal alternatives for functionalities such as wavefront modulation and acoustic energy trapping, etc. However, most of the reported acoustic metasurfaces were passive. Here a magnetically tuned mechanism is reported for membrane-type acoustic metamaterials. Harnessing the geometric nonlinearity of membrane structures, the transmission spectrum is both theoretically and experimentally tuned over broadband by an external static magnetic force. Simultaneously, the phase profiles can be readily tailored by the magnetic stimulus. Further, a magnetic-control multifunctional metasurface is proposed for low-frequency wave manipulation. By switching the magnetic force distribution, multi extraordinary phenomena, such as acoustic wave redirecting, focusing, bending, etc., are realized without changing the physical structure. Besides, it is demonstrated the proposed metasurface, at deep subwavelength scale (~1/85λ), supports anomalous reflected wave manipulation over a wide band. These results open up new degrees of freedom to steer acoustic wave and pave a way for designing active acoustic devices.Xing ChenPeng LiuZewei HouYongmao PeiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Xing Chen Peng Liu Zewei Hou Yongmao Pei Magnetic-control multifunctional acoustic metasurface for reflected wave manipulation at deep subwavelength scale
description	Abstract Acoustic metasurfaces, exhibiting superior performance with subwavelength thickness, are ideal alternatives for functionalities such as wavefront modulation and acoustic energy trapping, etc. However, most of the reported acoustic metasurfaces were passive. Here a magnetically tuned mechanism is reported for membrane-type acoustic metamaterials. Harnessing the geometric nonlinearity of membrane structures, the transmission spectrum is both theoretically and experimentally tuned over broadband by an external static magnetic force. Simultaneously, the phase profiles can be readily tailored by the magnetic stimulus. Further, a magnetic-control multifunctional metasurface is proposed for low-frequency wave manipulation. By switching the magnetic force distribution, multi extraordinary phenomena, such as acoustic wave redirecting, focusing, bending, etc., are realized without changing the physical structure. Besides, it is demonstrated the proposed metasurface, at deep subwavelength scale (~1/85λ), supports anomalous reflected wave manipulation over a wide band. These results open up new degrees of freedom to steer acoustic wave and pave a way for designing active acoustic devices.
format	article
author	Xing Chen Peng Liu Zewei Hou Yongmao Pei
author_facet	Xing Chen Peng Liu Zewei Hou Yongmao Pei
author_sort	Xing Chen
title	Magnetic-control multifunctional acoustic metasurface for reflected wave manipulation at deep subwavelength scale
title_short	Magnetic-control multifunctional acoustic metasurface for reflected wave manipulation at deep subwavelength scale
title_full	Magnetic-control multifunctional acoustic metasurface for reflected wave manipulation at deep subwavelength scale
title_fullStr	Magnetic-control multifunctional acoustic metasurface for reflected wave manipulation at deep subwavelength scale
title_full_unstemmed	Magnetic-control multifunctional acoustic metasurface for reflected wave manipulation at deep subwavelength scale
title_sort	magnetic-control multifunctional acoustic metasurface for reflected wave manipulation at deep subwavelength scale
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/aa13c41acda845088e6d05573d1be73c
work_keys_str_mv	AT xingchen magneticcontrolmultifunctionalacousticmetasurfaceforreflectedwavemanipulationatdeepsubwavelengthscale AT pengliu magneticcontrolmultifunctionalacousticmetasurfaceforreflectedwavemanipulationatdeepsubwavelengthscale AT zeweihou magneticcontrolmultifunctionalacousticmetasurfaceforreflectedwavemanipulationatdeepsubwavelengthscale AT yongmaopei magneticcontrolmultifunctionalacousticmetasurfaceforreflectedwavemanipulationatdeepsubwavelengthscale
_version_	1718384677672189952

Magnetic-control multifunctional acoustic metasurface for reflected wave manipulation at deep subwavelength scale

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