Superb electromagnetic wave-absorbing composites based on large-scale graphene and carbon nanotube films

Abstarct Graphene has sparked extensive research interest for its excellent physical properties and its unique potential for application in absorption of electromagnetic waves. However, the processing of stable large-scale graphene and magnetic particles on a micrometer-thick conductive support is a...

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Autores principales:	Jinsong Li, Weibang Lu, Jonghwan Suhr, Hang Chen, John Q. Xiao, Tsu-Wei Chou
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/11ab21139e6944b5a8d2af33f6352b7e
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spelling	oai:doaj.org-article:11ab21139e6944b5a8d2af33f6352b7e2021-12-02T16:06:52ZSuperb electromagnetic wave-absorbing composites based on large-scale graphene and carbon nanotube films10.1038/s41598-017-02639-72045-2322https://doaj.org/article/11ab21139e6944b5a8d2af33f6352b7e2017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-02639-7https://doaj.org/toc/2045-2322Abstarct Graphene has sparked extensive research interest for its excellent physical properties and its unique potential for application in absorption of electromagnetic waves. However, the processing of stable large-scale graphene and magnetic particles on a micrometer-thick conductive support is a formidable challenge for achieving high reflection loss and impedance matching between the absorber and free space. Herein, a novel and simple approach for the processing of a CNT film-Fe3O4-large scale graphene composite is studied. The Fe3O4 particles with size in the range of 20–200 nm are uniformly aligned along the axial direction of the CNTs. The composite exhibits exceptionally high wave absorption capacity even at a very low thickness. Minimum reflection loss of −44.7 dB and absorbing bandwidth of 4.7 GHz at −10 dB are achieved in composites with one-layer graphene in six-layer CNT film-Fe3O4 prepared from 0.04 M FeCl3. Microstructural and theoretical studies of the wave-absorbing mechanism reveal a unique Debye dipolar relaxation with an Eddy current effect in the absorbing bandwidth.Jinsong LiWeibang LuJonghwan SuhrHang ChenJohn Q. XiaoTsu-Wei ChouNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jinsong Li Weibang Lu Jonghwan Suhr Hang Chen John Q. Xiao Tsu-Wei Chou Superb electromagnetic wave-absorbing composites based on large-scale graphene and carbon nanotube films
description	Abstarct Graphene has sparked extensive research interest for its excellent physical properties and its unique potential for application in absorption of electromagnetic waves. However, the processing of stable large-scale graphene and magnetic particles on a micrometer-thick conductive support is a formidable challenge for achieving high reflection loss and impedance matching between the absorber and free space. Herein, a novel and simple approach for the processing of a CNT film-Fe3O4-large scale graphene composite is studied. The Fe3O4 particles with size in the range of 20–200 nm are uniformly aligned along the axial direction of the CNTs. The composite exhibits exceptionally high wave absorption capacity even at a very low thickness. Minimum reflection loss of −44.7 dB and absorbing bandwidth of 4.7 GHz at −10 dB are achieved in composites with one-layer graphene in six-layer CNT film-Fe3O4 prepared from 0.04 M FeCl3. Microstructural and theoretical studies of the wave-absorbing mechanism reveal a unique Debye dipolar relaxation with an Eddy current effect in the absorbing bandwidth.
format	article
author	Jinsong Li Weibang Lu Jonghwan Suhr Hang Chen John Q. Xiao Tsu-Wei Chou
author_facet	Jinsong Li Weibang Lu Jonghwan Suhr Hang Chen John Q. Xiao Tsu-Wei Chou
author_sort	Jinsong Li
title	Superb electromagnetic wave-absorbing composites based on large-scale graphene and carbon nanotube films
title_short	Superb electromagnetic wave-absorbing composites based on large-scale graphene and carbon nanotube films
title_full	Superb electromagnetic wave-absorbing composites based on large-scale graphene and carbon nanotube films
title_fullStr	Superb electromagnetic wave-absorbing composites based on large-scale graphene and carbon nanotube films
title_full_unstemmed	Superb electromagnetic wave-absorbing composites based on large-scale graphene and carbon nanotube films
title_sort	superb electromagnetic wave-absorbing composites based on large-scale graphene and carbon nanotube films
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/11ab21139e6944b5a8d2af33f6352b7e
work_keys_str_mv	AT jinsongli superbelectromagneticwaveabsorbingcompositesbasedonlargescalegrapheneandcarbonnanotubefilms AT weibanglu superbelectromagneticwaveabsorbingcompositesbasedonlargescalegrapheneandcarbonnanotubefilms AT jonghwansuhr superbelectromagneticwaveabsorbingcompositesbasedonlargescalegrapheneandcarbonnanotubefilms AT hangchen superbelectromagneticwaveabsorbingcompositesbasedonlargescalegrapheneandcarbonnanotubefilms AT johnqxiao superbelectromagneticwaveabsorbingcompositesbasedonlargescalegrapheneandcarbonnanotubefilms AT tsuweichou superbelectromagneticwaveabsorbingcompositesbasedonlargescalegrapheneandcarbonnanotubefilms
_version_	1718384823657037824

Superb electromagnetic wave-absorbing composites based on large-scale graphene and carbon nanotube films

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