Controlling the nanoscale rippling of graphene with SiO2 nanoparticles

Z. Osváth, E. Gergely-Fülöp, N. Nagy, A. Deák, P. Nemes-Incze, X. Jin, C. Hwang, L. P. Biró

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

The electronic properties of graphene can be significantly influenced by mechanical strain. One practical approach to induce strain in graphene is to transfer atomically thin membranes onto pre-patterned substrates with specific corrugations. The possibility of using nanoparticles to impart extrinsic rippling to graphene has not been fully explored yet. Here we study the structure and elastic properties of graphene grown by chemical vapour deposition and transferred onto a continuous layer of SiO2 nanoparticles with diameters of around 25 nm, prepared on a Si substrate by the Langmuir-Blodgett technique. We show that the corrugation of the transferred graphene, and thus the membrane strain, can be modified by annealing at moderate temperatures. The membrane parts bridging the nanoparticles are suspended and can be reversibly lifted by the attractive forces between an atomic force microscope tip and graphene. This allows the dynamic control of the local morphology of graphene nanomembranes.

Original languageEnglish
Pages (from-to)6030-6036
Number of pages7
JournalNanoscale
Volume6
Issue number11
DOIs
Publication statusPublished - Jun 7 2014

ASJC Scopus subject areas

  • Materials Science(all)

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