Magnetoactive acoustic metamaterials based on nanoparticle-enhanced diaphragm

Abstract Magnetoactive membrane-type acoustic metamaterials are fabricated by coating a layer of magnetic nanoparticles on the polyethylene (PE) membranes and their vibration characters are investigated experimentally. From our experiments, we discovered that, under different magnetic fields by vary...

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Autores principales:	Xingwei Tang, Shanjun Liang, Yusheng Jiang, Cong Gao, Yujin Huang, Yuan Zhang, Chang Xue, Weijia Wen
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/4ba130e29fbe4e73b8912321ea517612
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spelling	oai:doaj.org-article:4ba130e29fbe4e73b8912321ea5176122021-11-14T12:17:24ZMagnetoactive acoustic metamaterials based on nanoparticle-enhanced diaphragm10.1038/s41598-021-01569-92045-2322https://doaj.org/article/4ba130e29fbe4e73b8912321ea5176122021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-01569-9https://doaj.org/toc/2045-2322Abstract Magnetoactive membrane-type acoustic metamaterials are fabricated by coating a layer of magnetic nanoparticles on the polyethylene (PE) membranes and their vibration characters are investigated experimentally. From our experiments, we discovered that, under different magnetic fields by varying the distance between a magnet and the membranes, such membranes exhibit tunable vibration eigenfrequencies (the shift towards lower frequencies), which is caused by the variation of the effective mass density and effective tension coefficient resulted from the second derivative of the magnetic field. The strong magnetic force between the layer of magnetic nanoparticles and the magnet enhances the eigenfrequency shift. A spring oscillator model is proposed and it agrees well with the experimental results. We also experimentally observed that the vibration radius, effective mass density, and effective tension coefficient of the membranes can enormously affect the eigenfrequencies of the membranes. We believe that this type of metamaterials may open up some potential applications for acoustic devices with turntable vibration properties.Xingwei TangShanjun LiangYusheng JiangCong GaoYujin HuangYuan ZhangChang XueWeijia WenNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Xingwei Tang Shanjun Liang Yusheng Jiang Cong Gao Yujin Huang Yuan Zhang Chang Xue Weijia Wen Magnetoactive acoustic metamaterials based on nanoparticle-enhanced diaphragm
description	Abstract Magnetoactive membrane-type acoustic metamaterials are fabricated by coating a layer of magnetic nanoparticles on the polyethylene (PE) membranes and their vibration characters are investigated experimentally. From our experiments, we discovered that, under different magnetic fields by varying the distance between a magnet and the membranes, such membranes exhibit tunable vibration eigenfrequencies (the shift towards lower frequencies), which is caused by the variation of the effective mass density and effective tension coefficient resulted from the second derivative of the magnetic field. The strong magnetic force between the layer of magnetic nanoparticles and the magnet enhances the eigenfrequency shift. A spring oscillator model is proposed and it agrees well with the experimental results. We also experimentally observed that the vibration radius, effective mass density, and effective tension coefficient of the membranes can enormously affect the eigenfrequencies of the membranes. We believe that this type of metamaterials may open up some potential applications for acoustic devices with turntable vibration properties.
format	article
author	Xingwei Tang Shanjun Liang Yusheng Jiang Cong Gao Yujin Huang Yuan Zhang Chang Xue Weijia Wen
author_facet	Xingwei Tang Shanjun Liang Yusheng Jiang Cong Gao Yujin Huang Yuan Zhang Chang Xue Weijia Wen
author_sort	Xingwei Tang
title	Magnetoactive acoustic metamaterials based on nanoparticle-enhanced diaphragm
title_short	Magnetoactive acoustic metamaterials based on nanoparticle-enhanced diaphragm
title_full	Magnetoactive acoustic metamaterials based on nanoparticle-enhanced diaphragm
title_fullStr	Magnetoactive acoustic metamaterials based on nanoparticle-enhanced diaphragm
title_full_unstemmed	Magnetoactive acoustic metamaterials based on nanoparticle-enhanced diaphragm
title_sort	magnetoactive acoustic metamaterials based on nanoparticle-enhanced diaphragm
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/4ba130e29fbe4e73b8912321ea517612
work_keys_str_mv	AT xingweitang magnetoactiveacousticmetamaterialsbasedonnanoparticleenhanceddiaphragm AT shanjunliang magnetoactiveacousticmetamaterialsbasedonnanoparticleenhanceddiaphragm AT yushengjiang magnetoactiveacousticmetamaterialsbasedonnanoparticleenhanceddiaphragm AT conggao magnetoactiveacousticmetamaterialsbasedonnanoparticleenhanceddiaphragm AT yujinhuang magnetoactiveacousticmetamaterialsbasedonnanoparticleenhanceddiaphragm AT yuanzhang magnetoactiveacousticmetamaterialsbasedonnanoparticleenhanceddiaphragm AT changxue magnetoactiveacousticmetamaterialsbasedonnanoparticleenhanceddiaphragm AT weijiawen magnetoactiveacousticmetamaterialsbasedonnanoparticleenhanceddiaphragm
_version_	1718429285251809280

Magnetoactive acoustic metamaterials based on nanoparticle-enhanced diaphragm

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