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Paper Abstract and Keywords
Presentation 2012-08-27 14:30
The influence of bonding layer on the characteristic of piezoelectric polymer transducer
Yonggang Cao, Kang-Lyeol Ha, Moojoon Kim (Pukyong National Univ.), Jungsoon Kim (Tongmyong Univ.) US2012-40
Abstract (in Japanese) (See Japanese page) 
(in English) Piezoelectric polymer film poly(vinylidene fluoride) (PVDF) is increasingly used to make the high-frequency ultrasound transducer. This film is usually bonded with backing substrate by an adhesive material, such as epoxy, for the transducers. The adhesive layer, called bonding layer in this paper, influences the electromechanical characteristics of the transducer. In this study, the effects of the bonding layer on the characteristics of piezoelectric polymer transducer were investigated intensively. EPO-TEK 301 epoxy was used to bond a PVDF film (52 μm thickness) with backing substrate of copper(Cu) together. The resonance characteristics of the films themselves and of the transducers made of the films with different active area were measured by an impedance analyzer, and the pulse-echo responses of the transducers with different thickness of the bonding layer were measured by a pulsar/receiver system. The measured results were compared with those of simulation by KLM equivalent circuit model. As the results, it was shown that the bonding layer changes the waveform of pulse-echo response dramatically and reduces the resonance frequency of the transducer. Consequently, it was noted that the influence of bonding layer should be carefully considered in polymer transducer design.
Keyword (in Japanese) (See Japanese page) 
(in English) Ultrasound transducer / PVDF / Bonding layer / KLM model / / / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 186, US2012-40, pp. 33-36, Aug. 2012.
Paper # US2012-40 
Date of Issue 2012-08-20 (US) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee US  
Conference Date 2012-08-27 - 2012-08-28 
Place (in Japanese) (See Japanese page) 
Place (in English) Pukyong National University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) General, Underwater Acoustics (Co-Organization:The Marine Acoustics Society of Japan, Youngnam Chapter of The Acoustical Society of Korea) 
Paper Information
Registration To US 
Conference Code 2012-08-US 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) The influence of bonding layer on the characteristic of piezoelectric polymer transducer 
Sub Title (in English)  
Keyword(1) Ultrasound transducer  
Keyword(2) PVDF  
Keyword(3) Bonding layer  
Keyword(4) KLM model  
1st Author's Name Yonggang Cao  
1st Author's Affiliation Pukyong National University (Pukyong National Univ.)
2nd Author's Name Kang-Lyeol Ha  
2nd Author's Affiliation Pukyong National University (Pukyong National Univ.)
3rd Author's Name Moojoon Kim  
3rd Author's Affiliation Pukyong National University (Pukyong National Univ.)
4th Author's Name Jungsoon Kim  
4th Author's Affiliation Tongmyong University (Tongmyong Univ.)
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Date Time 2012-08-27 14:30:00 
Presentation Time 20 
Registration for US 
Paper # IEICE-US2012-40 
Volume (vol) IEICE-112 
Number (no) no.186 
Page pp.33-36 
#Pages IEICE-4 
Date of Issue IEICE-US-2012-08-20 

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