Cylindrically shaped ultrasonic linear array fabricated using PIMNT/epoxy 1-3 piezoelectric composite

被引：40

作者：

Wang, Wei ^{[1
,2
,3
]}

Or, Siu Wing ^{[2
]}

Yue, Qingwen ^{[1
,3
]}

Zhang, Yaoyao ^{[1
,3
]}

Jiao, Jie ^{[1
,3
]}

Ren, Bo ^{[1
]}

Lin, Di ^{[1
]}

Leung, Chung Ming ^{[2
]}

Zhao, Xiangyong ^{[1
]}

Luo, Haosu ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Inorgan Funct Mat & Device, Shanghai 201800, Peoples R China

[2] Hong Kong Polytech Univ, Dept Elect Engn, Kowloon, Hong Kong, Peoples R China

[3] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 2013年 / 192卷

关键词：

PIMNT single crystal; 1-3 piezoelectric composite; Ultrasonic linear array; PT SINGLE-CRYSTAL; TRANSDUCER; PERFORMANCE; DESIGN;

D O I：

10.1016/j.sna.2012.12.020

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In order to improve the flexibility of Pb(In1/2Nb1/2)O-3-Pb(Mg1/3Nb2/3)O-3-PbTiO3 (PIMNT) single crystal and make full use of the ultrahigh piezoelectric property in focused ultrasonic transducers, PIMNT/epoxy 1-3 composite with a volume fraction of 60% was prepared by a modified dice-and-fill method. Excellent properties for ultrasonic transducer applications have been achieved, such as higher thickness electromechanical coupling coefficient (k(t) = 84%), lower acoustic impedance (Z = 19 MRayls), and moderate dielectric constant (epsilon(T)(33)/epsilon(0) = 2040). Based on the improved flexibility of as-prepared PIMNT/epoxy 1-3 composite, a cylindrically shaped ultrasonic linear array has been designed, fabricated, and characterized. The cylindrically shaped ultrasonic linear array has achieved an ultra-broad bandwidth (-6 dB) of 128%, which is a significant improvement over the plane linear array. These promising results show that the PIMNT/epoxy 1-3 composite can be used to develop high-performance focused ultrasonic transducers. Crown Copyright (C) 2012 Published by Elsevier B.V. All rights reserved.

引用

页码：69 / 75

页数：7

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