Unusual frictional signals in exfoliated mono layer graphene

POSTER

Abstract

We have investigated abnormal friction phenomena on graphene mono-layer using atomic force microscopy (AFM). The graphene sample was prepared by exfoliation method on thermal oxidized 3000{\AA}-thick SiO2 buffer layer using 3M scotch tape. In order to analyze the friction phenomena, we have changed sample loading direction, scan direction, contact force, and scan speed. Moreover, influence of H2O was checked. Through the experiments, we confirmed that these phenomena are related with graphene itself, not from the SiO2 buffer layer. These friction phenomena may provide information for defect structures or for detecting artifacts of mono layer graphene surface.

Authors

  • Jin Sik Choi

    • Division of Quantum Phases \& Devices, Department of Physics, Konkuk University, Korea
    • Division of Quantum Phases \& Devices, Department of Physics, Konkuk Univ.

  • Ik Su Byun

    • Division of Quantum Phases \& Devices, Department of Physics, Konkuk University, Korea
    • Division of Quantum Phases \& Devices, Department of Physics, Konkuk Univ.

  • Jin-Soo Kim

    • Division of Quantum Phases \& Devices, Department of Physics, Konkuk University, Korea
    • Division of Quantum Phases \& Devices, Department of Physics, Konkuk Univ.

  • Sang Ho Jeon

    • Division of Quantum Phases \& Devices, Department of Physics, Konkuk University, Korea
    • Division of Quantum Phases \& Devices, Department of Physics, Konkuk Univ.

  • In Rok Hwang

    • Division of Quantum Phases \& Devices, Department of Physics, Konkuk University, Korea
    • Division of Quantum Phases \& Devices, Department of Physics, Konkuk Univ.

  • Sa Hwan Hong

    • Division of Quantum Phases \& Devices, Department of Physics, Konkuk University, Korea
    • Division of Quantum Phases \& Devices, Department of Physics, Konkuk Univ.

  • Seung-Woong Lee

    • Division of Quantum Phases \& Devices, Department of Physics, Konkuk University, Korea
    • Division of Quantum Phases \& Devices, Department of Physics, Konkuk Univ.

  • Sung-Oong Kang

    • Division of Quantum Phases \& Devices, Department of Physics, Korea
    • Division of Quantum Phases \& Devices, Department of Physics, Konkuk Univ.

  • Bae Ho Park

    • Division of Quantum Phases \& Devices, Department of Physics, Korea
    • Division of Quantum Phases \& Devices, Department of Physics, Konkuk Univ.

  • Duhee Yoon

    • Department of physics, Sogang University, Seoul 121-742, Korea
    • Department of Physics, Sogang University, Seoul 121-742, Korea

  • Hyerim Moon

    • Department of Physics, Sogang University, Seoul 121-742, Korea

  • Hyeonsik Cheong

    • Sogang University
    • Department of physics, Sogang University, Seoul 121-742, Korea
    • Department of Physics, Sogang University, Seoul 121-742, Korea

  • Young-Woo Son

    • KIAS (Korea Institute for Advanced Study)
    • Korea Institute for Advanced Study, Seoul 130-722, Korea
    • Korea Institute for Advanced Study, Seoul, Korea
    • Korea Institute for Advanced Study