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Physical modeling and validation of porpoises’ directional emission via hybrid metamaterials
In wave physics and engineering, directional emission sets a fundamental limitation on conventional simple sources as their sizes should be sufficiently larger than their wavelength. Artificial metamaterial and animal biosonar both show potential in overcoming this limitation. Existing metamaterials...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Oxford University Press
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8291406/ https://www.ncbi.nlm.nih.gov/pubmed/34691953 http://dx.doi.org/10.1093/nsr/nwz085 |
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author | Dong, Erqian Zhang, Yu Song, Zhongchang Zhang, Tianye Cai, Chen Fang, Nicholas X |
author_facet | Dong, Erqian Zhang, Yu Song, Zhongchang Zhang, Tianye Cai, Chen Fang, Nicholas X |
author_sort | Dong, Erqian |
collection | PubMed |
description | In wave physics and engineering, directional emission sets a fundamental limitation on conventional simple sources as their sizes should be sufficiently larger than their wavelength. Artificial metamaterial and animal biosonar both show potential in overcoming this limitation. Existing metamaterials arranged in periodic microstructures face great challenges in realizing complex and multiphase biosonar structures. Here, we proposed a physical directional emission model to bridge the gap between porpoises’ biosonar and artificial metamaterial. Inspired by the anatomical and physical properties of the porpoise's biosonar transmission system, we fabricated a hybrid metamaterial system composed of multiple composite structures. We validated that the hybrid metamaterial significantly increased directivity and main lobe energy over a broad bandwidth both numerically and experimentally. The device displayed efficiency in detecting underwater target and suppressing false target jamming. The metamaterial-based physical model may be helpful to achieve the physical mechanisms of porpoise biosonar detection and has diverse applications in underwater acoustic sensing, ultrasound scanning, and medical ultrasonography. |
format | Online Article Text |
id | pubmed-8291406 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Oxford University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-82914062021-10-21 Physical modeling and validation of porpoises’ directional emission via hybrid metamaterials Dong, Erqian Zhang, Yu Song, Zhongchang Zhang, Tianye Cai, Chen Fang, Nicholas X Natl Sci Rev Research Article In wave physics and engineering, directional emission sets a fundamental limitation on conventional simple sources as their sizes should be sufficiently larger than their wavelength. Artificial metamaterial and animal biosonar both show potential in overcoming this limitation. Existing metamaterials arranged in periodic microstructures face great challenges in realizing complex and multiphase biosonar structures. Here, we proposed a physical directional emission model to bridge the gap between porpoises’ biosonar and artificial metamaterial. Inspired by the anatomical and physical properties of the porpoise's biosonar transmission system, we fabricated a hybrid metamaterial system composed of multiple composite structures. We validated that the hybrid metamaterial significantly increased directivity and main lobe energy over a broad bandwidth both numerically and experimentally. The device displayed efficiency in detecting underwater target and suppressing false target jamming. The metamaterial-based physical model may be helpful to achieve the physical mechanisms of porpoise biosonar detection and has diverse applications in underwater acoustic sensing, ultrasound scanning, and medical ultrasonography. Oxford University Press 2019-10 2019-07-22 /pmc/articles/PMC8291406/ /pubmed/34691953 http://dx.doi.org/10.1093/nsr/nwz085 Text en © The Author(s) 2019. Published by Oxford University Press on behalf of China Science Publishing & Media Ltd. https://creativecommons.org/licenses/by/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) ), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Article Dong, Erqian Zhang, Yu Song, Zhongchang Zhang, Tianye Cai, Chen Fang, Nicholas X Physical modeling and validation of porpoises’ directional emission via hybrid metamaterials |
title | Physical modeling and validation of porpoises’ directional emission via hybrid metamaterials |
title_full | Physical modeling and validation of porpoises’ directional emission via hybrid metamaterials |
title_fullStr | Physical modeling and validation of porpoises’ directional emission via hybrid metamaterials |
title_full_unstemmed | Physical modeling and validation of porpoises’ directional emission via hybrid metamaterials |
title_short | Physical modeling and validation of porpoises’ directional emission via hybrid metamaterials |
title_sort | physical modeling and validation of porpoises’ directional emission via hybrid metamaterials |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8291406/ https://www.ncbi.nlm.nih.gov/pubmed/34691953 http://dx.doi.org/10.1093/nsr/nwz085 |
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