High electromechanical coupling factor and electrostrictive strain over broad frequency range in electrostrictive poly(vinylidene fluoride-trifluoroethylene) copolymer films

Vivek Bharti, T. B. Xu, Z. Y. Cheng, T. Mai, Q. M. Zhang, Tom Ramotowski, K. A. Wright

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Electromechanical coupling factor is one of the most important parameters for measuring the performance of materials for electromechanical transduction applications. In this paper, we will show that a transverse electromechanical coupling factor k31 of more than 0.45 can be achieved in poly(vinylidene fluoride-trifluoroethylene) [P(VDF-TrFE)] copolymer under certain electron irradiation treatment conditions. In addition, the effective piezoelectric coefficients of the irradiated copolymer have been found to increase markedly in comparison to non-irradiated copolymers. Experimental evidences also indicate that the improved electrostrictive strains in irradiated copolymer films can be maintained over a broad frequency and temperature range.

Original languageEnglish (US)
Pages (from-to)672-675
Number of pages4
JournalJapanese Journal of Applied Physics
Volume40
Issue number2 A
DOIs
StatePublished - Feb 2001

All Science Journal Classification (ASJC) codes

  • General Engineering
  • General Physics and Astronomy

Fingerprint

Dive into the research topics of 'High electromechanical coupling factor and electrostrictive strain over broad frequency range in electrostrictive poly(vinylidene fluoride-trifluoroethylene) copolymer films'. Together they form a unique fingerprint.

Cite this