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Effective parameters of metal-dielectric composites: influence of eddy currents due to density fluctuations

Published online by Cambridge University Press:  10 March 2009

A. P. Vinogradov ,
N. Burokur  and
S. Zouhdi
A. P. Vinogradov
Affiliation:
Institute of Theoretical and Applied Electromagnetism (ITAE), Russian Academy of Sciences, Izhorskaya 13/19, 127412 Moscow, Russia
N. Burokur
Affiliation:
Laboratoire de Génie Électrique de Paris, Plateau de Moulon, 91192 Gif-Sur-Yvette Cedex, France
S. Zouhdi*
Affiliation:
Laboratoire de Génie Électrique de Paris, Plateau de Moulon, 91192 Gif-Sur-Yvette Cedex, France
*
said.zouhdi@u-psud.fr
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Abstract

It is shown that the space fluctuations of concentration of conducting inclusions might be responsible for the well-known disagreement between theory and experiment at determining microwave losses in metal-dielectric mixture: the theories (percolation theory, effective medium theory, etc.) predict much lower losses than those measured in experiment. It is demonstrated that if the effective skin depth in the regions occupied by the fluctuation is comparable to the mean diameter of these regions we can expect additional losses.

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Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 46 , Issue 3: Metamaterials , June 2009 , 32604
Copyright
© EDP Sciences, 2009

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References

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