Abstract：
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.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Li J,Lu W,Suhr J,Chen H,Xiao JQ,Chou TWdoi
10.1038/s41598-017-02639-7subject
Has Abstractpub_date
2017-05-24 00:00:00pages
2349issue
1issn
2045-2322pii
10.1038/s41598-017-02639-7journal_volume
7pub_type
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