New extremely broadband ferroelectric polymer ultrasound transducers

Author

Brown, Lewis F.

Author_Institution

Dept. of Electr. Eng., South Dakota State Univ., Brookings, SD, USA

fYear

1992

fDate

30 Aug-2 Sep 1992

Firstpage

277

Lastpage

280

Abstract

Custom immersible ultrasound transducers have been developed for an application requiring -6 dB fractional bandwidths in excess of 150%, spanning a frequency range of approximately 5-100 MHz. The copolymer transducers were optimally designed for maximum bandwidth and efficiency for operation in water. The design is also custom optimized for the specific dielectric and piezoelectric properties of the P(VDF-TrFE) poly(vinylidene fluoride-trifluoroethylene) copolymer used. The design, fabrication, and testing, of these transducers are described. The transducers have shown excellent broadband performance, capable of extending beyond 1.5 decades of frequency, with improvements in insertion loss still desirable

Keywords

ferroelectric devices; piezoelectric transducers; polymers; ultrasonic transducers; 5 to 100 MHz; P(VDF-TrFE); broadband ferroelectric polymer ultrasound transducers; copolymer transducers; design; efficiency; fabrication; fractional bandwidths; immersible ultrasound transducers; insertion loss; piezoelectric properties; poly(vinylidene fluoride-trifluoroethylene); testing; water; Bandwidth; Design optimization; Dielectrics; Fabrication; Ferroelectric materials; Frequency; Piezoelectric transducers; Polymers; Ultrasonic imaging; Ultrasonic transducers;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Ferroelectrics, 1992. ISAF '92., Proceedings of the Eighth IEEE International Symposium on

Conference_Location

Greenville, SC

Print_ISBN

0-7803-0465-9

Type

conf

DOI

10.1109/ISAF.1992.300685

Filename

300685