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Thermal mirror buckling in freestanding graphene locally controlled by scanning tunnelling microscopy

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  • M. Neek-Amal

    (Departement Fysica, Universiteit Antwerpen, Groenenborgerlaan 171
    Shahid Rajaee Teacher Training University)

  • P. Xu

    (University of Arkansas
    Laboratory for Physical Sciences, University of Maryland)

  • J.K. Schoelz

    (University of Arkansas)

  • M.L. Ackerman

    (University of Arkansas)

  • S.D. Barber

    (University of Arkansas)

  • P.M. Thibado

    (University of Arkansas)

  • A. Sadeghi

    (Departement Physik, Universität Basel, Klingelbergstrasse 82)

  • F.M. Peeters

    (Departement Fysica, Universiteit Antwerpen, Groenenborgerlaan 171)

Abstract

Knowledge of and control over the curvature of ripples in freestanding graphene are desirable for fabricating and designing flexible electronic devices, and recent progress in these pursuits has been achieved using several advanced techniques such as scanning tunnelling microscopy. The electrostatic forces induced through a bias voltage (or gate voltage) were used to manipulate the interaction of freestanding graphene with a tip (substrate). Such forces can cause large movements and sudden changes in curvature through mirror buckling. Here we explore an alternative mechanism, thermal load, to control the curvature of graphene. We demonstrate thermal mirror buckling of graphene by scanning tunnelling microscopy and large-scale molecular dynamic simulations. The negative thermal expansion coefficient of graphene is an essential ingredient in explaining the observed effects. This new control mechanism represents a fundamental advance in understanding the influence of temperature gradients on the dynamics of freestanding graphene and future applications with electro-thermal-mechanical nanodevices.

Suggested Citation

  • M. Neek-Amal & P. Xu & J.K. Schoelz & M.L. Ackerman & S.D. Barber & P.M. Thibado & A. Sadeghi & F.M. Peeters, 2014. "Thermal mirror buckling in freestanding graphene locally controlled by scanning tunnelling microscopy," Nature Communications, Nature, vol. 5(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms5962
    DOI: 10.1038/ncomms5962
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    Cited by:

    1. Yue Kai & Wenlong Xu & Bailin Zheng & Nan Yang & Kai Zhang & P. M. Thibado, 2019. "Origin of Non-Gaussian Velocity Distribution Found in Freestanding Graphene Membranes," Complexity, Hindawi, vol. 2019, pages 1-7, March.

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