Multifunctional graphene-based coatings for strain sensing and electromagnetic shielding
A. Rinaldi, C. Acquarelli, A. Proietti, A. Tamburrano, G. De Bellis, A.G. D’Aloia, M.S. Sarto,
Sapienza Univ. of Rome, Dept Astronautics, Electrical, Energy Engineering (DIAEE).
Research Center for Nanotechnology Applied to Engineering of Sapienza University (CNIS)
During the last decade, carbon-based materials have gained popularity thanks to their light weight, resistance to corrosion, electrical and thermal conductivity, multifunctionality [1-3]. In particular, carbon nanotube (CNT) and graphene nanomaterials, such as graphene oxide (GO) and multilayer graphene (MLG) micro- and nanosheets, also known as graphene nanoplatelets (GNPs), have been widely investigated.
A promising class of graphene-based materials for large-scale exploitation in engineering, and in particular for electromagnetic shielding [4] and strain sensing [5] applications, are GNPs produced by thermochemical exfoliation of intercalated graphite compounds and their derivatives, like GNP-polymer composites [4-6], GNP-papers [7] or GNP-coatings produced by spray-casting over polymer or glass substrate [8-10].
The presentation will provide an overview of the recent results and application of GNP-based coatings for electromagnetic shielding application and as strain sensors for the structural health monitoring of carbon fiber laminates. An insight on the correlation between production process, structural and morphological characteristics and multifunctional properties of the new materials will be provided.
Keywords: Graphene-based coating, strain sensor, electromagnetic shielding, spray-cast deposition
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