Three-dimensional micro electromechanical system piezoelectric ultrasound transducer

被引：107

作者：

Hajati, Arman ^{[1
]}

Latev, Dimitre ^{[1
]}

Gardner, Deane ^{[1
]}

Hajati, Azadeh ^{[2
]}

Imai, Darren ^{[1
]}

Torrey, Marc ^{[1
]}

Schoeppler, Martin ^{[1
]}

机构：

[1] FUJIFILM Dimatix Inc, Santa Clara, CA 95050 USA

[2] TABA Med Imaging Ctr, Shiraz 7188834777, Iran

来源：

APPLIED PHYSICS LETTERS | 2012年 / 101卷 / 25期

关键词：

DEGENERATE MODES; FILMS;

D O I：

10.1063/1.4772469

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Here we present the design and experimental acoustic test data for an ultrasound transducer technology based on a combination of micromachined dome-shaped piezoelectric resonators arranged in a flexible architecture. Our high performance niobium-doped lead zirconate titanate film is implemented in three-dimensional dome-shaped structures, which form the basic resonating cells. Adjustable frequency response is realized by mixing these basic cells and modifying their dimensions by lithography. Improved characteristics such as high sensitivity, adjustable wide-bandwidth frequency response, low transmit voltage compatible with ordinary integrated circuitry, low electrical impedance well matched to coaxial cabling, and intrinsic acoustic impedance match to water are demonstrated. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4772469]

引用

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