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Building High-Throughput Molecular Junctions Using Indented Graphene Point Contacts

Authors

  • Yang Cao,

    1. Center for NanoChemistry, Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871 (P. R. China)
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  • Shaohua Dong,

    1. Center for NanoChemistry, Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871 (P. R. China)
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  • Song Liu,

    1. Center for NanoChemistry, Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871 (P. R. China)
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  • Li He,

    1. State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, Peking University (P. R. China)
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  • Lin Gan,

    1. Center for NanoChemistry, Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871 (P. R. China)
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  • Xiaoming Yu,

    1. State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, Peking University (P. R. China)
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  • Dr. Michael L. Steigerwald,

    1. Department of Chemistry and the Columbia University Center for Electronics of Molecular Nanostructures, Columbia University (USA)
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  • Prof. Xiaosong Wu,

    1. State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, Peking University (P. R. China)
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  • Prof. Zhongfan Liu,

    1. Center for NanoChemistry, Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871 (P. R. China)
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  • Prof. Xuefeng Guo

    Corresponding author
    1. Center for NanoChemistry, Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871 (P. R. China)
    • Center for NanoChemistry, Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871 (P. R. China)
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  • We thank Colin Nuckolls and Philip Kim (Columbia University) for enlightening discussions. We acknowledge primary financial support from MOST (2009CB623703 and 2012CB921404), NSFC (20833001, 51121091, 2112016, 11074007, and 21003002), FANEDD (2007B21), 111 Project (B08001), and BSTSP (2009A01).

Abstract

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A molecular-scale gap array is introduced into a single-layer graphene sheet by a lithographic dash-line cutting process. Electrically active molecules are then covalently wired into these point contacts in high yield, thus forming stable molecular devices that for example are able to reversibly switch their conductance by chemical treatment.

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