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Proceedings Paper

P(VDF-TrFE) films for high-frequency ultrasonic transducers
Author(s): Lewis F. Brown
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Paper Abstract

The ferroelectric copolymer polyvinylidene fluoride- trifluoroethylene, P(VDF-TrFE), has been shown to possess electrical and acoustic properties of interest for high frequency ultrasonic transducer applications. It has been used successfully in high frequency (10 - 200 MHz) medical imaging and nondestructive testing applications where its inherent properties of low acoustic impedance, high compliance, and broadband acoustic properties outweigh its poorer dielectric and electro-mechanical coupling properties which are lower than electroceramics. This paper briefly reviews successful high frequency P(VDF-TrFE) ultrasonic transducer applications and focuses on the design and testing of ultrasound transducer devices based on new spin- cast P(VDF-TrFE) copolymer films. Particular attention is given to (PVDF-TrFe) materials characterization and selection, ultrasonic transducer design and device packaging for high frequency applications. Ultrasonic testing of such high frequency transducers is also briefly discussed.

Paper Details

Date Published: 21 June 1999
PDF: 4 pages
Proc. SPIE 3664, Medical Imaging 1999: Ultrasonic Transducer Engineering, (21 June 1999); doi: 10.1117/12.350683
Show Author Affiliations
Lewis F. Brown, South Dakota State Univ. (United States)

Published in SPIE Proceedings Vol. 3664:
Medical Imaging 1999: Ultrasonic Transducer Engineering
K. Kirk Shung, Editor(s)

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