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Microwave shielding of HiPco carbon nanotube films

Published online by Cambridge University Press:  03 February 2011

AFSHIN MORADI  and
MOHAMMAD HOSAIN TEIMOURPOUR
AFSHIN MORADI
Affiliation:
Department of Nano Science, Kermanshah University of Technology, Kermanshah, Iran Department of Nano Science, Institute for Studies in Theoretical Physics and Mathematics (IPM), Tehran, Iran (a.moradi@nano.ipm.ac.ir)
MOHAMMAD HOSAIN TEIMOURPOUR
Affiliation:
Department of Nano Science, Kermanshah University of Technology, Kermanshah, Iran
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Abstract

The theoretical study of microwave characteristics of a thin film of hydrogen plasma in carbon nanotubes, which were grown by iron-catalyzed high-pressure carbon monoxide disproportionation, is presented. The system is assumed to be illuminated by either a transverse magnetic (TM) or a transverse electric (TE) waves at an arbitrary angle of incidence to the film. By considering the interference effects because of multiple reflections between thin plasma layer interfaces, the reflectance, transmittance, and absorptance of microwave radiation at the plasma film are deduced and their functional dependence on the continuous changing of the angle of propagation and plasma thickness with fixed parameters of the system are studied. The simulation results show that for the present system, the interference effects lead to a sinusoidal variation of the reflected intensity and can greatly reduce the amount of reflection power, but the absorption power increases. In addition, it is found that the TE and TM waves have largely indistinguishable microwave absorption and transmission spectrums.

Type
Papers
Information
Journal of Plasma Physics , Volume 77 , Issue 5 , October 2011 , pp. 639 - 651
Copyright
Copyright © Cambridge University Press 2011

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