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

Journal of applied physics, 2020-02, Vol.127 (8) [Peer Reviewed Journal]

Author(s) ;2020 Author(s). Published under license by AIP Publishing. ;ISSN: 0021-8979 ;EISSN: 1089-7550 ;DOI: 10.1063/1.5131388 ;CODEN: JAPIAU

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  • Title:
    Theoretical analysis on the extension of a piezoelectric semi-conductor nanowire: Effects of flexoelectricity and strain gradient
  • Author: Zhao, MingHao ; Liu, Xiang ; Fan, CuiYing ; Lu, Chunsheng ; Wang, BingBing
  • Subjects: Axial forces ; Carrier density ; Concentration gradient ; Conductors ; Differential equations ; Dimensional analysis ; Exact solutions ; Nanowires ; Operators (mathematics) ; Piezoelectricity ; Size effects ; Smart structures
  • Is Part Of: Journal of applied physics, 2020-02, Vol.127 (8)
  • Description: 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.
  • Publisher: Melville: American Institute of Physics
  • Language: English
  • Identifier: ISSN: 0021-8979
    EISSN: 1089-7550
    DOI: 10.1063/1.5131388
    CODEN: JAPIAU
  • Source: Alma/SFX Local Collection
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