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Effect of dielectric relaxation on the performance of p(vdf-trfe) copolymer ultrasonic transducers.
| Content Provider | CiteSeerX |
|---|---|
| Author | Kwok, K. W. Chan, H. L. W. Choy, C. L. |
| Abstract | Abstract- The complex dielectric permittivity of vinylidene fluoride-trifluoroethylene copolymer with 20 mol % of TrFE [P(VDF-TrFE) 801201 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, 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. [NTRODUCTION Vinylidene fluoride-trifluoroethylene (P(VDF-TrFE)) copolymers have been widely used in a variety of applications including pyroelectric detectors, broad-band transducers, medical ultrasound and nonlinear optics [ 1- |
| File Format | |
| Access Restriction | Open |
| Subject Keyword | Dielectric Relaxation Copolymer Ultrasonic Transducer Vinylidene Fluoride-trifluoroethylene Copolymer Complex Dielectric Permittivity Broad-band Transducer Trfe Composition Vdf-trfe Transducer Ultrasonic Transducer Application Ntroduction Vinylidene Fluoride-trifluoroethylene Frequency Range Pyroelectric Detector Nonlinear Optic Medical Ultrasound Electromechanical Coupling Coefficient Considerable Interest |
| Content Type | Text |
| Resource Type | Article |
