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Controlling the nanoscale rippling of graphene with SiO2 nanoparticles

Osváth, Zoltán and Gergely-Fülöp, Eszter and Nagy, Norbert and Deák, András and Nemes Incze, Péter and Biró, László Péter (2014) Controlling the nanoscale rippling of graphene with SiO2 nanoparticles. NANOSCALE, 6. pp. 1-7. ISSN 2040-3364

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Abstract

The electronic properties of graphene can be significantly influenced by mechanical strain. One practical approach to induce strain in graphene is to transfer this atomically thin membrane onto pre-patterned substrates with specific corrugation. The possibility to use 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 Si substrate by 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.

Item Type: Article
Subjects: Q Science / természettudomány > QC Physics / fizika
SWORD Depositor: MTMT SWORD
Depositing User: MTMT SWORD
Date Deposited: 12 Mar 2014 11:00
Last Modified: 04 May 2014 17:59
URI: http://real.mtak.hu/id/eprint/10804

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