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Janus acoustic metascreen with nonreciprocal and reconfigurable phase modulations

Integrating different reliable functionalities in metastructures and metasurfaces has become of remarkable importance to create innovative multifunctional compact acoustic, optic or mechanical metadevices. In particular, implementing different wave manipulations in one unique material platform opens...

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Autores principales: Zhu, Yifan, Cao, Liyun, Merkel, Aurélien, Fan, Shi-Wang, Vincent, Brice, Assouar, Badreddine
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8648919/
https://www.ncbi.nlm.nih.gov/pubmed/34873154
http://dx.doi.org/10.1038/s41467-021-27403-4
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author Zhu, Yifan
Cao, Liyun
Merkel, Aurélien
Fan, Shi-Wang
Vincent, Brice
Assouar, Badreddine
author_facet Zhu, Yifan
Cao, Liyun
Merkel, Aurélien
Fan, Shi-Wang
Vincent, Brice
Assouar, Badreddine
author_sort Zhu, Yifan
collection PubMed
description Integrating different reliable functionalities in metastructures and metasurfaces has become of remarkable importance to create innovative multifunctional compact acoustic, optic or mechanical metadevices. In particular, implementing different wave manipulations in one unique material platform opens an appealing route for developing integrated metamaterials. Here, the concept of Janus acoustic metascreen is proposed and demonstrated, producing two-faced and independent wavefront manipulations for two opposite incidences. The feature of two-faced sound modulations requires nonreciprocal phase modulating elements. An acoustic resonant unit cell with rotating inner core, which produces a bias by a circulating fluid, is designed to achieve high nonreciprocity, leading to decoupled phase modulations for both forward and backward directions. In addition, the designed unit cell consisting of tunable phase modulators is reconfigurable. A series of Janus acoustic metascreens including optional combinations of extraordinary refraction, acoustic focusing, sound absorption, acoustic diffusion, and beam splitting are demonstrated through numerical simulations and experiments, showing their great potential for acoustic wavefront manipulation.
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spelling pubmed-86489192021-12-27 Janus acoustic metascreen with nonreciprocal and reconfigurable phase modulations Zhu, Yifan Cao, Liyun Merkel, Aurélien Fan, Shi-Wang Vincent, Brice Assouar, Badreddine Nat Commun Article Integrating different reliable functionalities in metastructures and metasurfaces has become of remarkable importance to create innovative multifunctional compact acoustic, optic or mechanical metadevices. In particular, implementing different wave manipulations in one unique material platform opens an appealing route for developing integrated metamaterials. Here, the concept of Janus acoustic metascreen is proposed and demonstrated, producing two-faced and independent wavefront manipulations for two opposite incidences. The feature of two-faced sound modulations requires nonreciprocal phase modulating elements. An acoustic resonant unit cell with rotating inner core, which produces a bias by a circulating fluid, is designed to achieve high nonreciprocity, leading to decoupled phase modulations for both forward and backward directions. In addition, the designed unit cell consisting of tunable phase modulators is reconfigurable. A series of Janus acoustic metascreens including optional combinations of extraordinary refraction, acoustic focusing, sound absorption, acoustic diffusion, and beam splitting are demonstrated through numerical simulations and experiments, showing their great potential for acoustic wavefront manipulation. Nature Publishing Group UK 2021-12-06 /pmc/articles/PMC8648919/ /pubmed/34873154 http://dx.doi.org/10.1038/s41467-021-27403-4 Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Zhu, Yifan
Cao, Liyun
Merkel, Aurélien
Fan, Shi-Wang
Vincent, Brice
Assouar, Badreddine
Janus acoustic metascreen with nonreciprocal and reconfigurable phase modulations
title Janus acoustic metascreen with nonreciprocal and reconfigurable phase modulations
title_full Janus acoustic metascreen with nonreciprocal and reconfigurable phase modulations
title_fullStr Janus acoustic metascreen with nonreciprocal and reconfigurable phase modulations
title_full_unstemmed Janus acoustic metascreen with nonreciprocal and reconfigurable phase modulations
title_short Janus acoustic metascreen with nonreciprocal and reconfigurable phase modulations
title_sort janus acoustic metascreen with nonreciprocal and reconfigurable phase modulations
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8648919/
https://www.ncbi.nlm.nih.gov/pubmed/34873154
http://dx.doi.org/10.1038/s41467-021-27403-4
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