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Optimal electromagnetic-wave absorption by enhanced dipole polarization in Ni/C nanocapsules.
- Source :
- Applied Physics Letters; 8/20/2012, Vol. 101 Issue 8, p083116, 4p, 1 Black and White Photograph, 4 Graphs
- Publication Year :
- 2012
-
Abstract
- Electromagnetic-wave (EMW) absorption by Ni/C nanocapsules with similar permeability but different permittivity mainly due to differences in the graphite-shell thickness has been investigated. The optimal working frequency could appear at S-band and C-band and considerable strong EMW absorption was achieved. For the optimal Ni/C nanocapsules, a reflection loss exceeding -20 dB was reached from 2.6 to 8.2 GHz with a maximum value of -40 dB at 3 GHz. The improved absorption can be attributed to an optimal electromagnetic match and an enhanced dipole polarization upon increasing of shell thickness. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00036951
- Volume :
- 101
- Issue :
- 8
- Database :
- Complementary Index
- Journal :
- Applied Physics Letters
- Publication Type :
- Academic Journal
- Accession number :
- 79357664
- Full Text :
- https://doi.org/10.1063/1.4747811