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1 May 1998 Phased array ultrasonic probe using Pb(Zn1/3Nb2/3)O3-PbTiO3 single crystal
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Forty-channel phased array probes using a O.9lPb(Zn113Nb213)03-O.O9PbTiO3 (PZN-PT 91/9) single crystal have been fabricated for greater sensitivity and broader bandwidth properties. The largest crystal by the self-flux method had the dimensions of about 43 X 42 X 40 mm. The fabricated probes have a center frequency of 3.5MHz and an aperture of about 8.5 X 8.5 mm. All transducer elements were successfully cut by mean value the fabrication process, and the dispersion of echo signals was within 20% of the average. Echo amplitudes of these PZN-PT 9 1/9 single-crystal probes are as much as 5 to 8 dB higher than those of conventional PZT ceramic probes. Moreover, the bandwidth ofthe PZN-PT 91/9 probes is 20 to 25 points broader than that of conventional PZT ceramic probes. This confirms that PZN-PT 91/9 single-crystal probe provides great improvements in the sensitivity and bandwidth of phased array probes.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Shiroh Saitoh, Tsuyoshi Kobayashi, Kouichi Harada, Senji Shimanuki, and Yohachi Yamashita "Phased array ultrasonic probe using Pb(Zn1/3Nb2/3)O3-PbTiO3 single crystal", Proc. SPIE 3341, Medical Imaging 1998: Ultrasonic Transducer Engineering, (1 May 1998);

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