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    Adsorbate-induced curvature and stiffening of graphene

    Access Status
    Open access via publisher
    Authors
    Svatek, S.
    Scott, O.
    Rivett, J.
    Wright, Kathleen
    Baldoni, M.
    Bichoutskaia, E.
    Taniguchi, T.
    Watanabe, K.
    Marsden, A.
    Wilson, N.
    Beton, P.
    Date
    2015
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Svatek, S. and Scott, O. and Rivett, J. and Wright, K. and Baldoni, M. and Bichoutskaia, E. and Taniguchi, T. et al. 2015. Adsorbate-induced curvature and stiffening of graphene. Nano Letters. 15 (1): pp. 159-164.
    Source Title
    Nano Letters
    DOI
    10.1021/nl503308c
    ISSN
    1530-6984
    School
    Nanochemistry Research Institute
    URI
    http://hdl.handle.net/20.500.11937/28775
    Collection
    • Curtin Research Publications
    Abstract

    © 2014 American Chemical Society. The adsorption of the alkane tetratetracontane (TTC, C44H90) on graphene induces the formation of a curved surface stabilized by a gain in adsorption energy. This effect arises from a curvature-dependent variation of a moiré pattern due to the mismatch of the carbon-carbon separation in the adsorbed molecule and the period of graphene. The effect is observed when graphene is transferred onto a deformable substrate, which in our case is the interface between water layers adsorbed on mica and an organic solvent, but is not observed on more rigid substrates such as boron nitride. Our results show that molecular adsorption can be influenced by substrate curvature, provide an example of two-dimensional molecular self-assembly on a soft, responsive interface, and demonstrate that the mechanical properties of graphene may be modified by molecular adsorption, which is of relevance to nanomechanical systems, electronics, and membrane technology.

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