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Formulation based on percolation theory to model the effective conductivity of carbon nanotube networks

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4 Author(s)
Decrossas, E. ; Dept. of Electr. Eng., Univ. of Arkansas, Fayetteville, AR, USA ; El Sabbagh, M.A. ; Hanna, V.F. ; El-Ghazaly, S.M.

The effective conductivity of carbon nanotube (CNT) networks as furnished by a manufacturer is experimentally extracted using two independent measurement setups. A mathematical model that is based on the percolation theory to describe the variation of conductivity as a function of frequency for different packing densities is deduced by fitting the mathematical equation to the curves of conductivity extracted from microwave measurements. The physical-mathematical model provides a better prediction of the conductivity of CNTs networks at high frequencies. This model will be used in full-wave solver to have more realistic values of conductivity and hence better modeling of radio frequency devices.

Published in:

Electromagnetic Compatibility (EMC), 2012 IEEE International Symposium on

Date of Conference:

6-10 Aug. 2012