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Sharkskin-Inspired Magnetoactive Reconfigurable Acoustic Metamaterials
Most of the existing acoustic metamaterials rely on architected structures with fixed configurations, and thus, their properties cannot be modulated once the structures are fabricated. Emerging active acoustic metamaterials highlight a promising opportunity to on-demand switch property states; howev...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
AAAS
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7025040/ https://www.ncbi.nlm.nih.gov/pubmed/32110778 http://dx.doi.org/10.34133/2020/4825185 |
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author | Lee, Kyung Hoon Yu, Kunhao Al Ba'ba'a, Hasan Xin, An Feng, Zhangzhengrong Wang, Qiming |
author_facet | Lee, Kyung Hoon Yu, Kunhao Al Ba'ba'a, Hasan Xin, An Feng, Zhangzhengrong Wang, Qiming |
author_sort | Lee, Kyung Hoon |
collection | PubMed |
description | Most of the existing acoustic metamaterials rely on architected structures with fixed configurations, and thus, their properties cannot be modulated once the structures are fabricated. Emerging active acoustic metamaterials highlight a promising opportunity to on-demand switch property states; however, they typically require tethered loads, such as mechanical compression or pneumatic actuation. Using untethered physical stimuli to actively switch property states of acoustic metamaterials remains largely unexplored. Here, inspired by the sharkskin denticles, we present a class of active acoustic metamaterials whose configurations can be on-demand switched via untethered magnetic fields, thus enabling active switching of acoustic transmission, wave guiding, logic operation, and reciprocity. The key mechanism relies on magnetically deformable Mie resonator pillar (MRP) arrays that can be tuned between vertical and bent states corresponding to the acoustic forbidding and conducting, respectively. The MRPs are made of a magnetoactive elastomer and feature wavy air channels to enable an artificial Mie resonance within a designed frequency regime. The Mie resonance induces an acoustic bandgap, which is closed when pillars are selectively bent by a sufficiently large magnetic field. These magnetoactive MRPs are further harnessed to design stimuli-controlled reconfigurable acoustic switches, logic gates, and diodes. Capable of creating the first generation of untethered-stimuli-induced active acoustic metadevices, the present paradigm may find broad engineering applications, ranging from noise control and audio modulation to sonic camouflage. |
format | Online Article Text |
id | pubmed-7025040 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | AAAS |
record_format | MEDLINE/PubMed |
spelling | pubmed-70250402020-02-27 Sharkskin-Inspired Magnetoactive Reconfigurable Acoustic Metamaterials Lee, Kyung Hoon Yu, Kunhao Al Ba'ba'a, Hasan Xin, An Feng, Zhangzhengrong Wang, Qiming Research (Wash D C) Research Article Most of the existing acoustic metamaterials rely on architected structures with fixed configurations, and thus, their properties cannot be modulated once the structures are fabricated. Emerging active acoustic metamaterials highlight a promising opportunity to on-demand switch property states; however, they typically require tethered loads, such as mechanical compression or pneumatic actuation. Using untethered physical stimuli to actively switch property states of acoustic metamaterials remains largely unexplored. Here, inspired by the sharkskin denticles, we present a class of active acoustic metamaterials whose configurations can be on-demand switched via untethered magnetic fields, thus enabling active switching of acoustic transmission, wave guiding, logic operation, and reciprocity. The key mechanism relies on magnetically deformable Mie resonator pillar (MRP) arrays that can be tuned between vertical and bent states corresponding to the acoustic forbidding and conducting, respectively. The MRPs are made of a magnetoactive elastomer and feature wavy air channels to enable an artificial Mie resonance within a designed frequency regime. The Mie resonance induces an acoustic bandgap, which is closed when pillars are selectively bent by a sufficiently large magnetic field. These magnetoactive MRPs are further harnessed to design stimuli-controlled reconfigurable acoustic switches, logic gates, and diodes. Capable of creating the first generation of untethered-stimuli-induced active acoustic metadevices, the present paradigm may find broad engineering applications, ranging from noise control and audio modulation to sonic camouflage. AAAS 2020-02-05 /pmc/articles/PMC7025040/ /pubmed/32110778 http://dx.doi.org/10.34133/2020/4825185 Text en Copyright © 2020 Kyung Hoon Lee et al. http://creativecommons.org/licenses/by/4.0/ Exclusive Licensee Science and Technology Review Publishing House. Distributed under a Creative Commons Attribution License (CC BY 4.0). |
spellingShingle | Research Article Lee, Kyung Hoon Yu, Kunhao Al Ba'ba'a, Hasan Xin, An Feng, Zhangzhengrong Wang, Qiming Sharkskin-Inspired Magnetoactive Reconfigurable Acoustic Metamaterials |
title | Sharkskin-Inspired Magnetoactive Reconfigurable Acoustic Metamaterials |
title_full | Sharkskin-Inspired Magnetoactive Reconfigurable Acoustic Metamaterials |
title_fullStr | Sharkskin-Inspired Magnetoactive Reconfigurable Acoustic Metamaterials |
title_full_unstemmed | Sharkskin-Inspired Magnetoactive Reconfigurable Acoustic Metamaterials |
title_short | Sharkskin-Inspired Magnetoactive Reconfigurable Acoustic Metamaterials |
title_sort | sharkskin-inspired magnetoactive reconfigurable acoustic metamaterials |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7025040/ https://www.ncbi.nlm.nih.gov/pubmed/32110778 http://dx.doi.org/10.34133/2020/4825185 |
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