Relaxor ferroelectric materials in two-dimensional transducer arrays

Author

Davidsen, Richard E. ; Smith, Stephen W.

Author_Institution

Dept. of Biomed. Eng., Duke Univ., Durham, NC, USA

Volume

2

fYear

1995

fDate

7-10 Nov 1995

Firstpage

1283

Abstract

Relaxor ferroelectric materials are characterized by high dielectric permittivities and bias controllable piezoelectric response, making them attractive for ultrasonic imaging applications. We propose using relaxor ferroelectrics to multiplex a 2-D array for volumetric and B-mode imaging. Piezoelectric properties of 2-D relaxor elements were measured and used for modeling relaxor ferroelectric transducers. A variable aperture 96 element 1.5-D array was fabricated using a relaxor material and integrated with a commercial B-mode scanner to investigate its multiplexing capability

Keywords

biomedical equipment; biomedical ultrasonics; ferroelectric materials; multiplexing; permittivity; piezoelectric materials; ultrasonic transducer arrays; 2-D array multiplexing; B-mode imaging; PZT; PbZrO3TiO3; bias controllable piezoelectric response; commercial B-mode scanner; high dielectric permittivities; multiplexing capability; piezoelectric properties; relaxor ferroelectric materials; relaxor ferroelectric transducers; two-dimensional transducer arrays; ultrasonic imaging applications; variable aperture 96 element 1.5-D array; volumetric imaging; Dielectric materials; Dielectric measurements; Ferroelectric materials; Permittivity measurement; Piezoelectric materials; Piezoelectric transducers; Relaxor ferroelectrics; Ultrasonic imaging; Ultrasonic transducers; Ultrasonic variables measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1995. Proceedings., 1995 IEEE

Conference_Location

Seattle, WA

ISSN

1051-0117

Print_ISBN

0-7803-2940-6

Type

conf

DOI

10.1109/ULTSYM.1995.495791

Filename

495791