NDLI: MnO2 Decorated Graphene Nanoribbons With Superior Permittivity And Excellent Microwave Shielding Properties

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MnO2 Decorated Graphene Nanoribbons With Superior Permittivity And Excellent Microwave Shielding Properties

Content Provider	CSIR - National Physical Laboratory (NPL)
Author	Gupta, Tejendra K. Singh, Bhanu P. Singh, Vidya Nand Teotia, Satish Singh, Avanish Pratap Elizabeth, Indu Dhakate, Sanjay R. Dhawan, S. K. Mathur, R. B.
Abstract	Microwave shielding properties of chemically synthesized MnO2 decorated graphene nanoribbons (GNRs) are reported for the first time. The nature of MnO2 decoration on the GNRs has been investigated using scanning electron microscopy, X-ray diffraction, Raman spectroscopy and high resolution transmission electron microscopy. The electromagnetic interference (EMI) shielding effectiveness of this material was investigated in the microwave region (Ku-band, 12.4-18 GHz). The presence of MnO2 on GNR enhances the interfacial polarization, multiple scattering, natural resonances and the effective anisotropy energy, which leads to absorption dominated high shielding effectiveness of -57 dB (blocking 99.9999% radiation) by a 3 mm thick sample. Dielectric attributes (epsilon' and epsilon '') were evaluated to understand the mechanism of the excellent shielding effectiveness. The material will be an excellent choice for radar absorbing applications.
Related Links	http://npl.csircentral.net/1410/1/261.pdf
File Format	PDF
ISSN	20507488
Volume Number	2
Issue Number	12
Journal	Journal of Materials Chemistry A
Language	English
Publisher	Royal Society Of Chemistry
Access Restriction	Open
Subject Keyword	Chemistry Energy Fuels Materials Science
Content Type	Text
Resource Type	Article
Subject	Renewable Energy, Sustainability and the Environment Materials Science Chemistry

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