Strain-Induced Orientation-Selective Cutting of Graphene into Graphene Nanoribbons on Oxidation

Authors

  • Liang Ma,

    1. Department of Physics & School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189 (China)
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  • Prof. Jinlan Wang,

    Corresponding author
    1. Department of Physics & School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189 (China)
    • Department of Physics & School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189 (China)
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  • Dr. Feng Ding

    Corresponding author
    1. Institute of Textiles and Clothing, Hong Kong Polytechnic University, Kowloon (China)
    • Institute of Textiles and Clothing, Hong Kong Polytechnic University, Kowloon (China)
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  • The work at SEU was supported by the NBRP (2010CB923401, 2011CB302004, 2009CB623200), NSF (21173040, 11074035, 20873019), SRFDP (20090092110025), an Outstanding Young Faculty Grant, and the Peiyu Foundation of SEU in China. The work at PolyU was supported by the PolyU research fund (1-ZV3B; A-PD1U; A-PH93; A-PJ50). We thank the computational resource at Department of Physics of SEU and National Supercomputing Center in Tianjin.

Abstract

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Cut to ribbons: Making atomically well-controlled graphene nanoribbons (GNRs) is prerequisite for many graphene applications. Ab initio calculations reveal that, on applying a uniaxial external tensile strain, O atoms adsorbed on graphene form parallel epoxy chains, and subsequent cutting by oxygen attack gives GNRs instead of the quantum dots that are obtained from unstrained graphene (see picture).

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