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Proceedings Paper

Optimization of 1-3 relaxor-PT single-crystal/polymer composites
Author(s): Xuecang Geng; Timothy A. Ritter; K. Kirk Shung
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Paper Abstract

PZN-PT single crystals exhibit an ultra-large longitudinal bar mode coupling coefficient (k33) of approximately 0.94. The thickness mode coupling coefficient (kt), however, is just comparable to soft PZT ceramics. In order to utilize the advantages of single crystals, it is desirable to incorporate them into a 1 - 3 composite structure. The single crystals possess a very large effective radial mode-coupling coefficient (kp) and are elastically soft compared with PZT ceramics. As a result, 1 - 3 single crystal polymer composites exhibit a very large kp of approximately 0.7 and only moderately enhanced kt (approximately 0.8) when typical epoxies are used as the matrix material.

Paper Details

Date Published: 21 June 1999
PDF: 7 pages
Proc. SPIE 3664, Medical Imaging 1999: Ultrasonic Transducer Engineering, (21 June 1999); doi: 10.1117/12.350682
Show Author Affiliations
Xuecang Geng, Blatek, Inc. (United States)
Timothy A. Ritter, NIH Resource Ctr. for Medical Ultrasonic Transducer Technology/The Pennsylvania State Univ (United States)
K. Kirk Shung, NIH Resource Ctr. for Medical Ultrasonic Transducer Technology/The Pennsylvania State Univ (United States)


Published in SPIE Proceedings Vol. 3664:
Medical Imaging 1999: Ultrasonic Transducer Engineering
K. Kirk Shung, Editor(s)

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