Share Email Print
cover

Proceedings Paper

Innovations in piezoelectric materials for ultrasound transducers
Author(s): Thomas R. Shrout; Seung Eek Eagle Park; Patrick D. Lopath; Richard J. Meyer Jr.; Timothy A. Ritter; K. Kirk Shung
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

Piezoelectric material lie at the heart of ultrasonic transducers. Recent advances in materials development include submicron piezoelectric ceramics (PZT) which lead to improvements in feature size, i.e. aspect ratio, element width, etc., for linear arrays and high frequency transducers. In contrast to fine grain ceramics, single crystal materials based on Relaxor-PT ferroelectrics offer electromechanical coupling coefficients > 90 percent with a range of dielectric permittivity allowing flexibility in transducer engineering in regard to electrical impedance matching. Using KLM modeling, very high bandwidth performance > 120 percent is projected. Specific examples of high frequency 1-3 composites and 1D linear array transducers fabricated from new piezoelectric materials, including sol-gel derived PZT fibers, are presented.

Paper Details

Date Published: 1 May 1998
PDF: 10 pages
Proc. SPIE 3341, Medical Imaging 1998: Ultrasonic Transducer Engineering, (1 May 1998); doi: 10.1117/12.307998
Show Author Affiliations
Thomas R. Shrout, The Pennsylvania State Univ. (United States)
Seung Eek Eagle Park, The Pennsylvania State Univ. (United States)
Patrick D. Lopath, The Pennsylvania State Univ. (United States)
Richard J. Meyer Jr., The Pennsylvania State Univ. (United States)
Timothy A. Ritter, The Pennsylvania State Univ. (United States)
K. Kirk Shung, The Pennsylvania State Univ. (United States)


Published in SPIE Proceedings Vol. 3341:
Medical Imaging 1998: Ultrasonic Transducer Engineering
K. Kirk Shung, Editor(s)

© SPIE. Terms of Use
Back to Top