P(VDF-TrFE) films for high-frequency ultrasonic transducers

Lewis F. Brown

doi:10.1117/12.350683

21 June 1999 P(VDF-TrFE) films for high-frequency ultrasonic transducers

Lewis F. Brown

Proceedings Volume 3664, Medical Imaging 1999: Ultrasonic Transducer Engineering; (1999) https://doi.org/10.1117/12.350683
Event: Medical Imaging '99, 1999, San Diego, CA, United States

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.

Citation Download Citation

Lewis F. Brown "P(VDF-TrFE) films for high-frequency ultrasonic transducers", Proc. SPIE 3664, Medical Imaging 1999: Ultrasonic Transducer Engineering, (21 June 1999); https://doi.org/10.1117/12.350683

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