Broadband transducers using effectively graded piezoelectric plates for generation of short-pulse ultrasound

被引：21

作者：

Yamada, K ^{[1
]}

Sakamura, J ^{[1
]}

Nakamura, K ^{[1
]}

机构：

[1] Tohoku Univ, Dept Elect & Commun Engn, Grad Sch Engn, Sendai, Miyagi 9808579, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1999年 / 38卷 / 5B期

关键词：

piezoelectric material; ultrasound transducer; broadband; high resolution; ultrasonic diagnosis; piezoelectrically graded material;

D O I：

10.1143/JJAP.38.3204

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Broadband ultrasound transducers that utilize piezoelectric materials having an effectively graded piezoelectric parameter and/or an excitation electric field applied across the piezoelectric material are investigated. These transducers are constructed by forming a number of fine V-grooves on one surface of a piezoelectric plate. The broadband frequency characteristic of the proposed transducer is demonstrated by experiments of wave generation in water Analysis by the finite-element method proves that even-order resonance modes are also excited in the plate with a grooved configuration.

引用

页码：3204 / 3207

页数：4