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The Surface- And Size-Dependent Elastic Moduli Of Nanostructures

Author

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  • JIAN-GANG GUO

    (State Key Laboratory of Nonlinear Mechanics (LNM), Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China)

  • YA-PU ZHAO

    (State Key Laboratory of Nonlinear Mechanics (LNM), Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China)

Abstract

A theoretical model is presented to investigate the size-dependent elastic moduli of nanostructures with the effects of the surface relaxation surface energy taken into consideration. At nanoscale, due to the large ratios of the surface-to-volume, the surface effects, which include surface relaxation surface energy, etc., can play important roles. Thus, the elastic moduli of nanostructures become surface- and size-dependent. In the research, the three-dimensional continuum model of the nanofilm with the surface effects is investigated. The analytical expressions of five nonzero elastic moduli of the nanofilm are derived, and then the dependence of the elastic moduli is discussed on the surface effects and the characteristic dimensions of nanofilms.

Suggested Citation

  • Jian-Gang Guo & Ya-Pu Zhao, 2007. "The Surface- And Size-Dependent Elastic Moduli Of Nanostructures," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 14(04), pages 667-670.
    • Handle: RePEc:wsi:srlxxx:v:14:y:2007:i:04:n:s0218625x07010044
    DOI: 10.1142/S0218625X07010044
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