Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/587
Title: Effect of dielectric relaxation on the performance of P(VDF-TrFE) copolymer ultrasonic transducers
Authors: Kwok, KW 
Chan, HLW 
Choy, CL
Keywords: Copolymers
Dielectric relaxation
Permittivity
Polyethylenes
Issue Date: 1998
Publisher: IEEE
Source: ISAF 1998 : proceedings of the eleventh IEEE International Symposium on Applications of Ferroelectrics, Montreux, Switzerland, August 24-27, 1998, p. 243-246 How to cite?
Abstract: The complex dielectric permittivity of vinylidene fluoride-trifluoroethylene copolymer with 20 mol% of TrFE [P(VDF-TrFE) 80/20] has been measured over the frequency range of 500 kHz to 20 MHz at temperatures varying from 20° to 100 °C. This copolymer has the highest electromechanical coupling coefficient k[sub t] among all TrFE compositions and has thus attracted considerable interest in ultrasonic transducer applications. The effect of dielectric relaxation on the performance of VDF-TrFE transducers is discussed.
URI: http://hdl.handle.net/10397/587
ISBN: 0-7803-4959-8
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