Wideband microwave absorption in thin nanocomposite films induced by a concentration gradient of mixed carbonaceous nanostructures

Jaiswar, Rajkumar;Bailly, Christian;Hermans, Sophie;Raskin, Jean-Pierre;Huynen, Isabelle
(2019) Journal of Materials Science: Materials in Electronics — Vol. 30, n° 21, p. 19147-19153 (2019)

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Absorption in excess of 90% is induced over a 22 GHz bandwidth by the combination of carbon nanotubes (CNTs) and graphene nanoplatelets (GNPs) dispersed in a polymer matrix. This performance is achieved by a stack of polymer films showing a concentration gradient of mixed CNTs and GNPs from layer to layer, having a total thickness of only 0.76 ∕4. Excellent agreement is observed from 18 to 40 GHz between the predicted and measured reflectivity and the resulting high absorption.
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Jaiswar, R., Bailly, C., Hermans, S., Raskin, J.-P., & Huynen, I. (2019). Wideband microwave absorption in thin nanocomposite films induced by a concentration gradient of mixed carbonaceous nanostructures. Journal of Materials Science: Materials in Electronics, 30(21), 19147-19153. https://doi.org/10.1007/s10854-019-02271-3 (Original work published 2019)