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Nanomechanical cleavage of molybdenum disulphide atomic layers

Author

Listed:
  • Dai-Ming Tang

    (International Center for Young Scientists (ICYS), National Institute for Materials Science (NIMS))

  • Dmitry G. Kvashnin

    (National University of Science and Technology MISiS
    Emanuel Institute of Biochemical Physics)

  • Sina Najmaei

    (Rice University)

  • Yoshio Bando

    (World Premier International (WPI) Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS))

  • Koji Kimoto

    (Surface Physics and Structure Unit, National Institute for Materials Science (NIMS))

  • Pekka Koskinen

    (NanoScience Center, University of Jyväskylä)

  • Pulickel M. Ajayan

    (Rice University)

  • Boris I. Yakobson

    (Rice University)

  • Pavel B. Sorokin

    (National University of Science and Technology MISiS
    Emanuel Institute of Biochemical Physics
    Technological Institute of Superhard and Novel Carbon Materials)

  • Jun Lou

    (Rice University)

  • Dmitri Golberg

    (World Premier International (WPI) Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS))

Abstract

The discovery of two-dimensional materials became possible due to the mechanical cleavage technique. Despite its simplicity, the as-cleaved materials demonstrated surprising macro-continuity, high crystalline quality and extraordinary mechanical and electrical properties that triggered global research interest. Here such cleavage processes and associated mechanical behaviours are investigated by a direct in situ transmission electron microscopy probing technique, using atomically thin molybdenum disulphide layers as a model material. Our technique demonstrates layer number selective cleavage, from a monolayer to double layer and up to 23 atomic layers. In situ observations combined with molecular dynamics simulations reveal unique layer-dependent bending behaviours, from spontaneous rippling (

Suggested Citation

  • Dai-Ming Tang & Dmitry G. Kvashnin & Sina Najmaei & Yoshio Bando & Koji Kimoto & Pekka Koskinen & Pulickel M. Ajayan & Boris I. Yakobson & Pavel B. Sorokin & Jun Lou & Dmitri Golberg, 2014. "Nanomechanical cleavage of molybdenum disulphide atomic layers," Nature Communications, Nature, vol. 5(1), pages 1-8, May.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms4631
    DOI: 10.1038/ncomms4631
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