Effective EMI shielding behaviour of thin graphene/PMMA nanolaminates in the THz range

Christos Pavlou, Maria Giovanna Pastore Carbone, Anastasios C. Manikas, George Trakakis, Can Koral, Gianpaolo Papari, Antonello Andreone and Costas Galiotis ()
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Christos Pavlou: Foundation for Research and Technology Hellas, Institute of Chemical Engineering Sciences, Stadiou St. Platani
Maria Giovanna Pastore Carbone: Foundation for Research and Technology Hellas, Institute of Chemical Engineering Sciences, Stadiou St. Platani
Anastasios C. Manikas: University of Patras
George Trakakis: Foundation for Research and Technology Hellas, Institute of Chemical Engineering Sciences, Stadiou St. Platani
Can Koral: INFN Naples Unit
Gianpaolo Papari: University of Naples “Federico II”
Antonello Andreone: INFN Naples Unit
Costas Galiotis: Foundation for Research and Technology Hellas, Institute of Chemical Engineering Sciences, Stadiou St. Platani

Nature Communications, 2021, vol. 12, issue 1, 1-9

Abstract: Abstract The use of graphene in a form of discontinuous flakes in polymer composites limits the full exploitation of the unique properties of graphene, thus requiring high filler loadings for achieving- for example- satisfactory electrical and mechanical properties. Herein centimetre-scale CVD graphene/polymer nanolaminates have been produced by using an iterative ‘lift-off/float-on’ process and have been found to outperform, for the same graphene content, state-of-the-art flake-based graphene polymer composites in terms of mechanical reinforcement and electrical properties. Most importantly these thin laminate materials show a high electromagnetic interference (EMI) shielding effectiveness, reaching 60 dB for a small thickness of 33 μm, and an absolute EMI shielding effectiveness close to 3·105 dB cm2 g−1 which is amongst the highest values for synthetic, non-metallic materials produced to date.

Date: 2021
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DOI: 10.1038/s41467-021-24970-4

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