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; Costas Galiotis

doi:10.1038/s41467-021-24970-4

arXiv · 2108.10016

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·Costas Galiotis

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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 micron, and an absolute EMI shielding effectiveness close to 3* 10 ^5 dB cm ^2 g^-1 which is amongst the highest values for synthetic, non-metallic materials produced to date.

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Christos Pavlou, Maria Giovanna Pastore Carbone, Anastasios C Manikas, George Trakakis, Can Koral, Gianpaolo Papari, Antonello Andreone, Costas Galiotis. 2021-08-23. Effective EMI shielding behaviour of thin graphene/PMMA nanolaminates in the THz range. https://doi.org/10.1038/s41467-021-24970-4

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