$Experimental demonstration of negative refraction with 3D locally resonant acoustic metafluids$
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Experimental demonstration of negative refraction with 3D locally resonant acoustic metafluids

Abstract Negative refraction of acoustic waves is demonstrated through underwater experiments conducted at ultrasonic frequencies on a 3D locally resonant acoustic metafluid made of soft porous silicone-rubber micro-beads suspended in a yield-stress fluid. By measuring the refracted angle of the aco...

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Autores principales:	Benoit Tallon, Artem Kovalenko, Olivier Poncelet, Christophe Aristégui, Olivier Mondain-Monval, Thomas Brunet
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/10a6631007514c6eaecb718e26dc37f4
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id	oai:doaj.org-article:10a6631007514c6eaecb718e26dc37f4
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spelling	oai:doaj.org-article:10a6631007514c6eaecb718e26dc37f42021-12-02T13:33:45ZExperimental demonstration of negative refraction with 3D locally resonant acoustic metafluids10.1038/s41598-021-84018-x2045-2322https://doaj.org/article/10a6631007514c6eaecb718e26dc37f42021-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-84018-xhttps://doaj.org/toc/2045-2322Abstract Negative refraction of acoustic waves is demonstrated through underwater experiments conducted at ultrasonic frequencies on a 3D locally resonant acoustic metafluid made of soft porous silicone-rubber micro-beads suspended in a yield-stress fluid. By measuring the refracted angle of the acoustic beam transmitted through this metafluid shaped as a prism, we determine the acoustic index to water according to Snell’s law. These experimental data are then compared with an excellent agreement to calculations performed in the framework of Multiple Scattering Theory showing that the emergence of negative refraction depends on the volume fraction $$\Phi$$ Φ of the resonant micro-beads. For diluted metafluid ( $$\Phi =3\%$$ Φ = 3 % ), only positive refraction occurs whereas negative refraction is demonstrated over a broad frequency band with concentrated metafluid ( $$\Phi =17\%$$ Φ = 17 % ).Benoit TallonArtem KovalenkoOlivier PonceletChristophe AristéguiOlivier Mondain-MonvalThomas BrunetNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-6 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Benoit Tallon Artem Kovalenko Olivier Poncelet Christophe Aristégui Olivier Mondain-Monval Thomas Brunet Experimental demonstration of negative refraction with 3D locally resonant acoustic metafluids
description	Abstract Negative refraction of acoustic waves is demonstrated through underwater experiments conducted at ultrasonic frequencies on a 3D locally resonant acoustic metafluid made of soft porous silicone-rubber micro-beads suspended in a yield-stress fluid. By measuring the refracted angle of the acoustic beam transmitted through this metafluid shaped as a prism, we determine the acoustic index to water according to Snell’s law. These experimental data are then compared with an excellent agreement to calculations performed in the framework of Multiple Scattering Theory showing that the emergence of negative refraction depends on the volume fraction $$\Phi$$ Φ of the resonant micro-beads. For diluted metafluid ( $$\Phi =3\%$$ Φ = 3 % ), only positive refraction occurs whereas negative refraction is demonstrated over a broad frequency band with concentrated metafluid ( $$\Phi =17\%$$ Φ = 17 % ).
format	article
author	Benoit Tallon Artem Kovalenko Olivier Poncelet Christophe Aristégui Olivier Mondain-Monval Thomas Brunet
author_facet	Benoit Tallon Artem Kovalenko Olivier Poncelet Christophe Aristégui Olivier Mondain-Monval Thomas Brunet
author_sort	Benoit Tallon
title	Experimental demonstration of negative refraction with 3D locally resonant acoustic metafluids
title_short	Experimental demonstration of negative refraction with 3D locally resonant acoustic metafluids
title_full	Experimental demonstration of negative refraction with 3D locally resonant acoustic metafluids
title_fullStr	Experimental demonstration of negative refraction with 3D locally resonant acoustic metafluids
title_full_unstemmed	Experimental demonstration of negative refraction with 3D locally resonant acoustic metafluids
title_sort	experimental demonstration of negative refraction with 3d locally resonant acoustic metafluids
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/10a6631007514c6eaecb718e26dc37f4
work_keys_str_mv	AT benoittallon experimentaldemonstrationofnegativerefractionwith3dlocallyresonantacousticmetafluids AT artemkovalenko experimentaldemonstrationofnegativerefractionwith3dlocallyresonantacousticmetafluids AT olivierponcelet experimentaldemonstrationofnegativerefractionwith3dlocallyresonantacousticmetafluids AT christophearistegui experimentaldemonstrationofnegativerefractionwith3dlocallyresonantacousticmetafluids AT oliviermondainmonval experimentaldemonstrationofnegativerefractionwith3dlocallyresonantacousticmetafluids AT thomasbrunet experimentaldemonstrationofnegativerefractionwith3dlocallyresonantacousticmetafluids
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Experimental demonstration of negative refraction with 3D locally resonant acoustic metafluids

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