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.
@article{arxiv.2108.10016,
title = {Effective EMI shielding behaviour of thin graphene/PMMA nanolaminates in the THz range},
author = {Christos Pavlou and Maria Giovanna Pastore Carbone and Anastasios C Manikas and George Trakakis and Can Koral and Gianpaolo Papari and Antonello Andreone and Costas Galiotis},
journal= {arXiv preprint arXiv:2108.10016},
year = {2021}
}