High vinylidene-fluoride content P(VDF-TrFE) films for ultrasound transducers

Author

Brown, L.F. ; Fowler, A.M.

Author_Institution

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

Volume

1

fYear

1998

fDate

1998

Firstpage

607

Abstract

A significant limitation for commercially available (non-voided) PVDF is its permanent degradation of piezoelectric properties when exposed to temperatures above approximately 65°C, and nearly complete loss of piezoelectric properties when exposed to temperatures above approximately 100°C. In addition, most commercially available P(VDF-TrFE) films have temperature limitations that rule out their use in transducers which require high temperature use or exposure (e.g., conventional medical autoclave sterilization). The purpose of this work was to investigate high-Curie temperature unoriented P(VDF-TrFE) films for their viability in ultrasound transducer applications

Keywords

ferroelectric materials; piezoelectric materials; piezoelectric transducers; polymer blends; polymer films; spin coating; ultrasonic transducers; PVDF; conventional medical autoclave sterilization; high temperature use; high vinylidene-fluoride content P(VDF-TrFE) films; high-Curie temperature; permanent degradation; piezoelectric properties; temperature limitations; ultrasound transducers; unoriented P(VDF-TrFE) films; Crystallization; Dielectric materials; Ferroelectric materials; Internal stresses; Piezoelectric films; Substrates; Temperature sensors; Ultrasonic imaging; Ultrasonic transducers; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1998. Proceedings., 1998 IEEE

Conference_Location

Sendai

ISSN

1051-0117

Print_ISBN

0-7803-4095-7

Type

conf

DOI

10.1109/ULTSYM.1998.762222

Filename

762222