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Proceedings Paper

Piezoelectric and electrostrictive polymeric actuator materials
Author(s): Qi Ming Zhang; Zhong-Yang Cheng; Vivek Bharti; Tian-Bing Xu; Haisheng Xu; Tian X. Mai; Steven J. Gross
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Paper Abstract

Peizoelectric and electrostrictive polymers are widely used in many areas of electromechanical actuation and transduction. This paper summarizes the current status and recent works in this class of polymers. For the piezoelectric polymers, the electromechanical properties of poly(vinylidene fluoride-trifluoroethylene) copolymers (P(VDF-TrFE), which possess the best piezoelectric performance among the known piezopolymers, are presented. In order to improve the strain capability and other electromechanical properties, the large electrostrictive response and high electromechanical conversion efficient near a first order ferroelectric-paraelectric transition of P(VDF-TrFE) copolymer were exploited. It is shown that the copolymer, treated with high energy electron irradiation, exhibits high electrostrictive strains (-5% longitudinal strain under 150 MV/m and 3.5% transverse starin under 100 MV/m) with high strain energy density, high load capability and improved electromechanical coupling factor. For the comparison, the works related to the Maxwell stress induced strain response in soft polymers are also discussed.

Paper Details

Date Published: 7 June 2000
PDF: 17 pages
Proc. SPIE 3987, Smart Structures and Materials 2000: Electroactive Polymer Actuators and Devices (EAPAD), (7 June 2000); doi: 10.1117/12.387762
Show Author Affiliations
Qi Ming Zhang, The Pennsylvania State Univ. (United States)
Zhong-Yang Cheng, The Pennsylvania State Univ. (United States)
Vivek Bharti, The Pennsylvania State Univ. (United States)
Tian-Bing Xu, The Pennsylvania State Univ. (United States)
Haisheng Xu, The Pennsylvania State Univ. (United States)
Tian X. Mai, The Pennsylvania State Univ. (United States)
Steven J. Gross, The Pennsylvania State Univ. (United States)


Published in SPIE Proceedings Vol. 3987:
Smart Structures and Materials 2000: Electroactive Polymer Actuators and Devices (EAPAD)
Yoseph Bar-Cohen, Editor(s)

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