Controlling the nanoscale rippling of graphene with SiO2 nanoparticles

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.

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Cited by in corpus (7)

• The structure and properties of graphene supported on gold nanoparticles
• Mechanics of nanoscale wrinkling of graphene on a non-developable spherical surface
• Graphene wrinkling induced by monodisperse nanoparticles: facile control and quantification
• Formation of wrinkles on graphene induced by nanoparticles: atomic force microscopy study
• Determination of the STM tip-graphene repulsive forces by comparative STM and AFM measurements on suspended graphene
• Coexistence of Van Hove Singularities and Pseudomagnetic Fields in Modulated Graphene Bilayer
• Mapping the nanomechanical properties of graphene suspended on silica nanoparticles