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

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

Nat Commun. 2021 Aug 2;12(1):4655. doi: 10.1038/s41467-021-24970-4.

Authors

Christos Pavlou^{1

2}, Maria Giovanna Pastore Carbone¹, Anastasios C Manikas², George Trakakis¹, Can Koral³, Gianpaolo Papari⁴, Antonello Andreone^{3

4}, Costas Galiotis^{5

6}

Affiliations

¹ Foundation for Research and Technology Hellas, Institute of Chemical Engineering Sciences, Stadiou St. Platani, Patras, Greece.
² Department of Chemical Engineering, University of Patras, Patras, Greece.
³ INFN Naples Unit, Naples, Italy.
⁴ Department of Physics "E. Pancini", University of Naples "Federico II", Naples, Italy.
⁵ Foundation for Research and Technology Hellas, Institute of Chemical Engineering Sciences, Stadiou St. Platani, Patras, Greece. c.galiotis@iceht.forth.gr.
⁶ Department of Chemical Engineering, University of Patras, Patras, Greece. c.galiotis@iceht.forth.gr.

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.