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Surface electric gibbs free energy and its effect on the electromechanical behavior of nano-dielectrics

  • Xi'an Jiaotong University

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

This paper considers the surface effect through the surface and bulk electric Gibbs free energy. The analytical expressions are derived for the effective elastic, dielectric and piezoelectric modulus for nano-structural elements in electromechanical coupling problems. Numerical examples for PZT are given to illustrate the size effects on the electromechanical properties of nano-particles, nanowires and nano-films quantitatively. The solution shows that the electromechanical properties of piezoelectric nano-material are size-dependent but the size effects on the elastic property and dielectric property are different.

Original languageEnglish
Pages (from-to)81-95
Number of pages15
JournalComputers, Materials and Continua
Volume28
Issue number1
StatePublished - 2012

Keywords

  • Electric Gibbs free energy
  • Surface effect
  • Surface polarization
  • Surface stress

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