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Title: Effect of electron irradiation on poly(vinylidene fluoride-trifluoroethylene) copolymers
Authors: Tang, Yiwen
Zhao, Xingzhong
Chan, Helen L. W.
Choy, Chung-loong
Subjects: Polymer blends
Polymer structure
Electron beam effects
Piezoelectric materials
Light interferometry
Solid-state phase transformations
Issue Date: 11-Sep-2000
Publisher: American Institute of Physics
Source: Applied physics letters, 11 Sept. 2000, v. 77, no. 11, p. 1713-1715.
Abstract: Electrical field-induced strain response of electron-irradiated poly(vinylidene fluoride-trifluoroethylene) copolymer has been studied by a Mach-Zehnder type heterodyne interferometer in the frequency range of 3-9 kHz. The electrostrictive constant is calculated from the strain results, which is of the same order of magnitude as those obtained at 1 Hz by a bimorph-based strain sensor but at much lower electrical field. Changes in the dielectric property, phase transition behavior and crystal structure of the same copolymer have also been studied. The reversible solid-state transition between the polar and nonpolar phase in the crystalline regions of the copolymer driven by the external electric field is suggested to be responsible for the significant high electrostrictive strain of the electron-irradiated copolymer.
Rights: © 2000 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Y. Tang et al., Appl. Phys. Lett. 77, 1713 (2000) and may be found at
Type: Journal/Magazine Article
ISSN: 0003-6951
Appears in Collections:AP Journal/Magazine Articles

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