FPCB as an Acoustic Matching Layer for 1D Linear Ultrasound Transducer Arrays

被引：7

作者：

Lee, Taemin ^{[1
]}

Jung, Joontaek ^{[2
]}

Lee, Sang-Mok ^{[1
]}

Park, Jongcheol ^{[2
]}

Park, Jae-Hyeong ^{[3
]}

Paik, Kyung-Wook ^{[4
]}

Lee, Hyunjoo J. ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Sch Elect Engn, Daejeon 34141, South Korea

[2] Natl NanoFab Ctr, Off Nano Convergence Technol, Daejeon 34141, South Korea

[3] Samsung Elect Co Ltd, Samsung Foundry, Hwaseong 18448, South Korea

[4] Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Daejeon 34141, South Korea

来源：

SENSORS | 2022年 / 22卷 / 15期

基金：

新加坡国家研究基金会;

关键词：

FPCB; composite; ACF; ultrasound transducer; acoustic matching layer; acoustic impedance; ANISOTROPIC CONDUCTIVE FILMS; BANDWIDTH; DESIGN; TEMPERATURE;

D O I：

10.3390/s22155557

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

An acoustic matching layer is an essential component of an ultrasound transducer to achieve maximum ultrasound transmission efficiency. Here, we develop a flexible printed circuit board (FPCB) with a composite structure consisting of multiple polyimide and copper layers and demonstrate it as a novel acoustic matching layer. With a flexible substrate and robust ACF bonding, the FPCB not only serves as an acoustic matching layer between piezoelectric elements and the surrounding medium but also as a ground for the electrical connection between the transducer array elements and the folded substrate. A 1D linear ultrasound transducer array with the FPCB matching layer exhibits larger output pressure, wider -3dB bandwidth, and higher ultrasound beam intensity compared to that of an ultrasound transducer array with the alumina/epoxy matching layer, which is one of the most commonly applied composite matching layers. The enhanced transmission performance verifies that the proposed FPCB is an excellent matching layer for 1D linear ultrasound transducer arrays.

引用

页数：13

共 33 条

[21] A Review of Acoustic Impedance Matching Techniques for Piezoelectric Sensors and Transducers [J].

Rathod, Vivek T. .

SENSORS, 2020, 20 (14) :1-65

[22] Fabrication and Modeling of Bismuth Titanate-PZT Ceramic Transducers for High Temperature Applications [J].

Reinhardt, Brian ;

Cypher, Robert ;

Sinding, Kyle ;

Tittmann, Bernhard .

2012 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IUS), 2012, :2742-2745

[23]

Rhee S, 2001, ULTRASON, P1051, DOI 10.1109/ULTSYM.2001.991900

[24]

Safari A., 2008, PIEZOELECTRIC ACOUST

[25]

Shamsudin S., 2021, J PHYS C SER, V2129

[26] Nanocomposite cerium oxide polymer matching layers with adjustable acoustic impedance between 4 MRayl and 7 MRayl [J].

Tiefensee, Frank ;

Becker-Willinger, Carsten ;

Heppe, Gisela ;

Herbeck-Engel, Petra ;

Jakob, Anette .

ULTRASONICS, 2010, 50 (03) :363-366

[27] Silicon oxide colloidal/polymer nanocomposite films [J].

Wang, HF ;

Cao, WW ;

Zhou, QF ;

Shung, KK ;

Huang, YH .

APPLIED PHYSICS LETTERS, 2004, 85 (24) :5998-6000

[28] High frequency properties of passive materials for ultrasonic transducers [J].

Wang, HF ;

Ritter, T ;

Cao, WW ;

Shung, KK .

IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, 2001, 48 (01) :78-84

[29]

Webster R.A., 2010, Passive materials for high frequency piezocomposite ultrasonic transducers

[30] Design of Piezoelectric Ultrasonic Transducer Based on Doped PDMS [J].

Yang, Ran ;

Liu, Wenyi ;

Gao, Wanjia ;

Kang, Dingwei .

SENSORS, 2021, 21 (09)

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