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Application of PMNPT single crystal in a 3.2 MHz phased-array ultrasonic medical imaging transducer

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6 Author(s)
H. Li ; Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, P.R. China ; Y. C. Li ; D. Zhou ; J. Peng
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This paper presents the acoustical design, fabrication and evaluation of a 96-element 3.2 MHz phased-array ultrasound transducer for echocardiography probe utilizing Pb(Mg1/3Nb2/3)O3-30%PbTiO3 (PMNPT) single crystal. The transducer consisted of a 1-3 PMNPT/epoxy composite with two quarter wave matching layers and a backing. The pulse-echo performance and echo amplitude of our prototypes are found to be superior to a similarly constructed lead zirconate titanate (PZT) array. The increased transducer bandwidth offers significant performance advantages, particularly in penetration and resolution.

Published in:

2007 Sixteenth IEEE International Symposium on the Applications of Ferroelectrics

Date of Conference:

27-31 May 2007