Phased array ultrasonic probe using Pb(Zn1/3Nb2/3)O3-PbTiO3 single crystal

Shiroh Saitoh; Tsuyoshi Kobayashi; Kouichi Harada; Senji Shimanuki; Yohachi Yamashita

doi:10.1117/12.308009

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1 May 1998 Phased array ultrasonic probe using Pb(Zn_1/3Nb_2/3)O₃-PbTiO₃ single crystal

Shiroh Saitoh, Tsuyoshi Kobayashi, Kouichi Harada, Senji Shimanuki, Yohachi Yamashita

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Proceedings Volume 3341, Medical Imaging 1998: Ultrasonic Transducer Engineering; (1998) https://doi.org/10.1117/12.308009
Event: Medical Imaging '98, 1998, San Diego, CA, United States

Abstract

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.

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Shiroh Saitoh, Tsuyoshi Kobayashi, Kouichi Harada, Senji Shimanuki, and Yohachi Yamashita "Phased array ultrasonic probe using Pb(Zn_1/3Nb_2/3)O₃-PbTiO₃ single crystal", Proc. SPIE 3341, Medical Imaging 1998: Ultrasonic Transducer Engineering, (1 May 1998); https://doi.org/10.1117/12.308009

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