Graphene laminated Cu nanoparticle arrays by spontaneous formation through dewetting

Abstract

Developing facile techniques to control the formation of combined structures of graphene and metal nanoparticles are key to realizing the various conceptual applications based on plasmonic substrates. Here, we report simultaneous formation of continuously grown graphene sheets by wrapping copper nanoparticles (CuNPs) formed in a state of transition from a pre-evaporated copper film during the annealing process. The morphologies and electrical and optical responses of graphene/CuNPs were characterized by varying the thickness of the copper film. We believe that this technique can be further applied to realize various electronic, optical, and catalytic applications. (C) 2018 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.