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    Self-healing of GaAs nanowires: An atomistic study

    Access Status
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    Authors
    Wang, Jun
    Lu, Chunsheng
    Wang, Q.
    Xiao, P.
    Ke, F.
    Bai, Y.
    Shen, Y.
    Wang, Y.
    Chen, B.
    Liao, X.
    Gao, H.
    Date
    2012
    Type
    Conference Paper
    
    Metadata
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    Citation
    Wang, Jun and Lu, Chunsheng and Wang, Qi and Xiao, Pan and Ke, Fujiu and Bai, Yilong and Shen, Yaogen and Wang, Yanbo and Chen, Bin and Liao, Xiaozhou and Gao, Huajian. 2012. Self-healing of GaAs nanowires: An atomistic study, in Proceedings of The 23rd International Congress of Theoretical and Applied Mechanics (ICTAM2012), Aug 19-24 2012. Beijing, China: The Chinese Society of Theoretical and Applied Mechanics.
    Source Title
    The 23rd International Congress of Theoretical and Applied Mechanics (ICTAM2012)
    Source Conference
    The 23rd International Congress of Theoretical and Applied Mechanics (ICTAM2012)
    School
    Department of Mechanical Engineering
    URI
    http://hdl.handle.net/20.500.11937/5911
    Collection
    • Curtin Research Publications
    Abstract

    Fractured GaAs nanowires (NWs) with a zinc-blende structure can spontaneously self-heal throughout Ga–As re-bonding at fracture sites. In this paper, a systematic molecular dynamics study has been made with focus on the influence of lateral dimensions of GaAs NWs, multiple fractures and atomistic diffusion on the self-healing process. The results show that, as the lateral dimension increases from 2.31 to 9.23 nm, GaAs NWs lose their 46.0% capacity of self-healing. After 24 repeated cycles of fracture, the restored tensile strength of a NW reduces by 64.4%. Atomistic diffusion enhances the healing efficiency by eliminating mismatch of atoms.

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