A diatomic elastic metamaterial for tunable asymmetric wave transmission in multiple frequency bands

Abstract Unidirectional/asymmetric transmission of acoustic/elastic waves has recently been realized by linear structures. Research related to unidirectionality of wave propagation has received intense attention due to potentially transformative and unique wave control applications. However, asymmet...

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Autores principales:	Bing Li, Sagr Alamri, K. T. Tan
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/02723bb14a6743a1947178367ddf940d
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spelling	oai:doaj.org-article:02723bb14a6743a1947178367ddf940d2021-12-02T11:52:41ZA diatomic elastic metamaterial for tunable asymmetric wave transmission in multiple frequency bands10.1038/s41598-017-05526-32045-2322https://doaj.org/article/02723bb14a6743a1947178367ddf940d2017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-05526-3https://doaj.org/toc/2045-2322Abstract Unidirectional/asymmetric transmission of acoustic/elastic waves has recently been realized by linear structures. Research related to unidirectionality of wave propagation has received intense attention due to potentially transformative and unique wave control applications. However, asymmetric transmission performance in existing devices usually occurs only in a narrow frequency band, and the asymmetric frequencies are always within ultrasound range (above 20 kHz). In this work, we design and propose a linear diatomic elastic metamaterial using dual-resonator concept to obtain large asymmetric elastic wave transmission in multiple low frequency bands. All of these frequency bands can be theoretically predicted to realize one-way wave propagation along different directions of transmission. The mechanisms of multiple asymmetric transmission bands are theoretically investigated and numerically verified by both analytical lattice and continuum models. Dynamic responses of the proposed system in the broadband asymmetric transmission bands are explored and analyzed in time and frequency domains. The effect of damping on the asymmetric wave transmission is further discussed. Excellent agreements between theoretical results and numerical verification are obtained.Bing LiSagr AlamriK. T. TanNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-14 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Bing Li Sagr Alamri K. T. Tan A diatomic elastic metamaterial for tunable asymmetric wave transmission in multiple frequency bands
description	Abstract Unidirectional/asymmetric transmission of acoustic/elastic waves has recently been realized by linear structures. Research related to unidirectionality of wave propagation has received intense attention due to potentially transformative and unique wave control applications. However, asymmetric transmission performance in existing devices usually occurs only in a narrow frequency band, and the asymmetric frequencies are always within ultrasound range (above 20 kHz). In this work, we design and propose a linear diatomic elastic metamaterial using dual-resonator concept to obtain large asymmetric elastic wave transmission in multiple low frequency bands. All of these frequency bands can be theoretically predicted to realize one-way wave propagation along different directions of transmission. The mechanisms of multiple asymmetric transmission bands are theoretically investigated and numerically verified by both analytical lattice and continuum models. Dynamic responses of the proposed system in the broadband asymmetric transmission bands are explored and analyzed in time and frequency domains. The effect of damping on the asymmetric wave transmission is further discussed. Excellent agreements between theoretical results and numerical verification are obtained.
format	article
author	Bing Li Sagr Alamri K. T. Tan
author_facet	Bing Li Sagr Alamri K. T. Tan
author_sort	Bing Li
title	A diatomic elastic metamaterial for tunable asymmetric wave transmission in multiple frequency bands
title_short	A diatomic elastic metamaterial for tunable asymmetric wave transmission in multiple frequency bands
title_full	A diatomic elastic metamaterial for tunable asymmetric wave transmission in multiple frequency bands
title_fullStr	A diatomic elastic metamaterial for tunable asymmetric wave transmission in multiple frequency bands
title_full_unstemmed	A diatomic elastic metamaterial for tunable asymmetric wave transmission in multiple frequency bands
title_sort	diatomic elastic metamaterial for tunable asymmetric wave transmission in multiple frequency bands
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/02723bb14a6743a1947178367ddf940d
work_keys_str_mv	AT bingli adiatomicelasticmetamaterialfortunableasymmetricwavetransmissioninmultiplefrequencybands AT sagralamri adiatomicelasticmetamaterialfortunableasymmetricwavetransmissioninmultiplefrequencybands AT kttan adiatomicelasticmetamaterialfortunableasymmetricwavetransmissioninmultiplefrequencybands AT bingli diatomicelasticmetamaterialfortunableasymmetricwavetransmissioninmultiplefrequencybands AT sagralamri diatomicelasticmetamaterialfortunableasymmetricwavetransmissioninmultiplefrequencybands AT kttan diatomicelasticmetamaterialfortunableasymmetricwavetransmissioninmultiplefrequencybands
_version_	1718394965019590656

A diatomic elastic metamaterial for tunable asymmetric wave transmission in multiple frequency bands

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