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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...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2015
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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. |
format | Online Article Text |
id | pubmed-4621533 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
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 |
work_keys_str_mv | AT chenyi latticedpentamodeacousticcloak AT liuxiaoning latticedpentamodeacousticcloak AT hugengkai latticedpentamodeacousticcloak |