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    Theoretical analysis on the extension of a piezoelectric semi-conductor nanowire: Effects of flexoelectricity and strain gradient

    79048.pdf (2.246Mb)
    Access Status
    Open access
    Authors
    Zhao, M.
    Liu, X.
    Fan, C.
    Lu, Chunsheng
    Wang, B.
    Date
    2020
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Zhao, M. and Liu, X. and Fan, C. and Lu, C. and Wang, B. 2020. Theoretical analysis on the extension of a piezoelectric semi-conductor nanowire: Effects of flexoelectricity and strain gradient. Journal of Applied Physics. 127 (8): ARTN 085707.
    Source Title
    Journal of Applied Physics
    DOI
    10.1063/1.5131388
    ISSN
    0021-8979
    Faculty
    Faculty of Science and Engineering
    School
    School of Civil and Mechanical Engineering
    Remarks

    Reproduced from Journal of Applied Physics. 127 (8): ARTN 085707 (2020) with the permission of AIP Publishing

    URI
    http://hdl.handle.net/20.500.11937/78926
    Collection
    • Curtin Research Publications
    Abstract

    One-dimensional piezoelectric semiconductor (PSC) nanowires have been widely used in smart structures and devices; however, few theoretical studies on their nano-size effects have been carried out. In this paper, a theoretical analysis of one-dimensional n-type PSC nanowires under an axial force was carried out, with consideration of the flexoelectric and strain gradient effects. Exact solutions were obtained based on the differential operator theory. The flexoelectric and strain gradient effects on the internal electromechanical field and carrier concentration have been discussed. It can be shown that the flexoelectric effect weakens the piezoelectricity of a PSC nanowire while the strain gradient has the opposite effect, with an amplitude enhancement that is dependent on the flexoelectric and inner scale coefficients.

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