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Latticed pentamode acoustic cloak

We report in this work a practical design of pentamode acoustic cloak with microstructure. The proposed cloak is assembled by pentamode lattice made of a single-phase solid material. The function of rerouting acoustic wave round an obstacle has been demonstrated numerically. It is also revealed that...

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Detalles Bibliográficos
Autores principales: Chen, Yi, Liu, Xiaoning, Hu, Gengkai
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4621533/
https://www.ncbi.nlm.nih.gov/pubmed/26503821
http://dx.doi.org/10.1038/srep15745
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author Chen, Yi
Liu, Xiaoning
Hu, Gengkai
author_facet Chen, Yi
Liu, Xiaoning
Hu, Gengkai
author_sort Chen, Yi
collection PubMed
description We report in this work a practical design of pentamode acoustic cloak with microstructure. The proposed cloak is assembled by pentamode lattice made of a single-phase solid material. The function of rerouting acoustic wave round an obstacle has been demonstrated numerically. It is also revealed that shear related resonance due to weak shear resistance in practical pentamode lattices punctures broadband feature predicted based on ideal pentamode cloak. As a consequence, the latticed pentamode cloak can only conceal the obstacle in segmented frequency ranges. We have also shown that the shear resonance can be largely reduced by introducing material damping, and an improved broadband performance can be achieved. These works pave the way for experimental demonstration of pentamode acoustic cloak.
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spelling pubmed-46215332015-10-29 Latticed pentamode acoustic cloak Chen, Yi Liu, Xiaoning Hu, Gengkai Sci Rep Article We report in this work a practical design of pentamode acoustic cloak with microstructure. The proposed cloak is assembled by pentamode lattice made of a single-phase solid material. The function of rerouting acoustic wave round an obstacle has been demonstrated numerically. It is also revealed that shear related resonance due to weak shear resistance in practical pentamode lattices punctures broadband feature predicted based on ideal pentamode cloak. As a consequence, the latticed pentamode cloak can only conceal the obstacle in segmented frequency ranges. We have also shown that the shear resonance can be largely reduced by introducing material damping, and an improved broadband performance can be achieved. These works pave the way for experimental demonstration of pentamode acoustic cloak. Nature Publishing Group 2015-10-27 /pmc/articles/PMC4621533/ /pubmed/26503821 http://dx.doi.org/10.1038/srep15745 Text en Copyright © 2015, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Chen, Yi
Liu, Xiaoning
Hu, Gengkai
Latticed pentamode acoustic cloak
title Latticed pentamode acoustic cloak
title_full Latticed pentamode acoustic cloak
title_fullStr Latticed pentamode acoustic cloak
title_full_unstemmed Latticed pentamode acoustic cloak
title_short Latticed pentamode acoustic cloak
title_sort latticed pentamode acoustic cloak
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4621533/
https://www.ncbi.nlm.nih.gov/pubmed/26503821
http://dx.doi.org/10.1038/srep15745
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