Effect of strain induced charge redistribution on Young's modulus of zinc oxide nanowires

A. V. Desai, Md Amanul Haque

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

As the size of material decreases to nanoscale, fundamental material properties such as Young's modulus are different from bulk values. In this paper, we propose a new mechanism to explain the difference in experimentally observed Young's modulus values between zinc oxide nanowires and bulk zinc oxide. As a binary compound material (such as zinc oxide) is strained, the effective charge on the ionic constituents of the material changes (in this case zinc and oxygen). The strain induced charge redistribution effect is more significant in nanostructures (such as nanowires) because of their higher fracture strains compared to their bulk counterparts. Since the Young's modulus of a material is related to the effective charge, we observe differences in modulus values between nanowires and their bulk equivalent. The strain induced charge redistribution phenomenon can also be used to explain variation in modulus values between bulk and nanoscale for other single crystal piezoelectric materials such as silicon carbide.

Original languageEnglish (US)
Title of host publicationProceedings of the ASME International Mechanical Engineering Congress and Exposition, IMECE 2007
Pages1175-1180
Number of pages6
DOIs
StatePublished - May 30 2008
EventASME International Mechanical Engineering Congress and Exposition, IMECE 2007 - Seattle, WA, United States
Duration: Nov 11 2007Nov 15 2007

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings
Volume11 PART B

Other

OtherASME International Mechanical Engineering Congress and Exposition, IMECE 2007
CountryUnited States
CitySeattle, WA
Period11/11/0711/15/07

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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  • Cite this

    Desai, A. V., & Haque, M. A. (2008). Effect of strain induced charge redistribution on Young's modulus of zinc oxide nanowires. In Proceedings of the ASME International Mechanical Engineering Congress and Exposition, IMECE 2007 (pp. 1175-1180). (ASME International Mechanical Engineering Congress and Exposition, Proceedings; Vol. 11 PART B). https://doi.org/10.1115/IMECE2007-41210