Zinc oxide-graphene based composite layers for electromagnetic interference shielding in the GHz frequency range

Abstract We report on preliminary results regarding the applicability of nanostructured composite layers for electromagnetic interference shielding in the frequency range of 10–20 GHz. The layers, based on commercially available graphene nanoplatelets and ZnO nanopowder grown using a hydrothermal procedure, were found to induce quite effective attenuation of electromagnetic radiation in the frequency range 10–20 GHz of around − 30 dBs, this depending on the ZnO nanopowder/graphene nanoplatelets ratio and the frequency employed.