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1749745 
Journal Article 
High Frequency PMN-PT 1-3 Composite Transducer for Ultrasonic Imaging Application 
Sun, P; Wang, G; Wu, D; Zhu, B; Hu, C; Liu, C; Djuth, FT; Zhou, Q; Shung, KK 
2010 
Yes 
Ferroelectrics
ISSN: 0015-0193 
408 
1 
120-128 
English 
21869845 
WOS:000284897600018 
Development of PMN-PT single crystal/epoxy 1-3 composites for high-frequency ultrasonic transducers application is presented. The composite was fabricated by using a DRIE dry etching process with a 45% volume fraction of PMN-PT. A 35 MHz ultrasound flat transducer was fabricated with the composite, which was found to have an effective electromechanical coupling coefficient of 0.81, an insertion loss of 18 db, and a -6 dB bandwidth as high as 100%. Tungsten wire phantom image shows that the transducer had an axial resolution of 30 μm, which was in good agreement with the theoretical expectation. The initial results showed that the PMN-PT/epoxy 1-3 composite has many attractive properties over conventional piezoelectric materials for medical imaging applications. 
PMN-PT; 1-3 composite; Ultrasonic transducer