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Article Dans Une Revue Ferroelectrics Année : 2015

Microwave Dielectric Properties of Tannin-Based Carbon Foams

Maxime Letellier
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J. Macutkevic
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A. Klochkov
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J. Banys
Vanessa Fierro
Alain Celzard

Résumé

Dielectric analysis of tannin-based carbon foams with different pore sizes, produced at different densities, was carried out in wide microwave frequency range (8GHz - 35GHz). Both dielectric permittivity and electrical conductivity of carbon foams at 8GHz, were high, i.e. more than 70 and close to 10 S/m respectively, and increased with carbon foams density according to power laws. High microwave complex dielectric permittivity values of carbon foams reported here, along with other valuable properties such as ``green'' origin, low price, lightness, chemical inertness, thermal stability and high conductivity in static regime, open new routes for producing effective electromagnetic shields and filters from tannin-based carbonaceous porous structures.
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Dates et versions

hal-01294755 , version 1 (29-03-2016)

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Maxime Letellier, J. Macutkevic, A. Paddubskaya, A. Klochkov, P. Kuzhir, et al.. Microwave Dielectric Properties of Tannin-Based Carbon Foams. Ferroelectrics, 2015, 479 (1, SI), pp.119-126. ⟨10.1080/00150193.2015.1012036⟩. ⟨hal-01294755⟩
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