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

被引：4

作者：

Saitoh, S ^{[1
]}

Kobayashi, T ^{[1
]}

Harada, K ^{[1
]}

Shimanuki, S ^{[1
]}

Yamashita, Y ^{[1
]}

机构：

[1] Toshiba Corp, Mat & Devices Res Lab, Kawasaki, Kanagawa 2108582, Japan

来源：

ULTRASONIC TRANSDUCER ENGINEERING: MEDICAL IMAGING 1998 | 1998年 / 3341卷

关键词：

phased array probe; single crystal; PZN-PT; forty-channel probe; simulation; fabrication; pulse echo; sensitivity; bandwidth;

D O I：

10.1117/12.308009

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

Forty-channel phased array probes using a 0.91Pb(Zn1/3Nb2/3)O-3-0.09PbTiO(3) (PZN-PT 91/9) single crystal have been fabricated for greater sensitivity and broader bandwidth properties. The largest crystal by the self;nux method had the dimensions of about 43 x 42 x 40 mm. The fabricated probes have a center frequency of 3.5 MHz 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 91/9 single-crystal probes are as much as 5 to 8 dB higher than those of conventional PZT ceramic probes. Moreover, the bandwidth of the 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.

引用

页码：264 / 271

页数：8