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Paper Abstract and Keywords
Presentation 2025-08-28 14:30
Study on Curved Surface of PVDF Line-Focused Ultrasonic Transducer for Leaky Surface Acoustic Wave Measurements -- Acoustic Morphology Using Surface Acoustic Wave Velocity --
Tatsuya Tomura (Science Tokyo), Mototaka Arakawa (Tohoku Univ.), Marie Tabaru (Science Tokyo) US2025-28
Abstract (in Japanese) (See Japanese page) 
(in English) In this study, I investigated the effect of transducer surface shape on ultrasonic measurements by introducing an elliptical profile in place of the conventional arc-shaped design. These transducers focus ultrasound by forming a curved surface across the entire vibrating element. I fabricated both arc-shaped and elliptical transducers and measured V(z) curves using slide glass as the sample. The results showed that the elliptical transducer exhibited significant differences from the arc-shaped one, particularly in the focal position and the region where oscillatory structures appeared. Nevertheless, the surface wave velocities derived from the V(z) curves were in generally good agreement with literature values for both transducer types. Furthermore, I confirmed the reproducibility of the elliptical transducer through additional measurements using polystyrene.
Keyword (in Japanese) (See Japanese page) 
(in English) ultrasonic microscope / surface wave measurement / elliptical shape / ultrasonic transducer / leaky surface acoustic wave / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 159, US2025-28, pp. 15-20, Aug. 2025.
Paper # US2025-28 
Date of Issue 2025-08-21 (US) 
ISSN Online edition: ISSN 2432-6380
Copyright
and
reproduction		 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)
Download PDF US2025-28

Conference Information
Committee US  
Conference Date 2025-08-28 - 2025-08-28 
Place (in Japanese) (See Japanese page) 
Place (in English) Institute of Science Tokyo (Ookayama Campus) 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Underwater acoustics, Ultrasonics, etc. 
Paper Information
Registration To US 
Conference Code 2025-08-US 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Study on Curved Surface of PVDF Line-Focused Ultrasonic Transducer for Leaky Surface Acoustic Wave Measurements 
Sub Title (in English) Acoustic Morphology Using Surface Acoustic Wave Velocity 
Keyword(1) ultrasonic microscope  
Keyword(2) surface wave measurement  
Keyword(3) elliptical shape  
Keyword(4) ultrasonic transducer  
Keyword(5) leaky surface acoustic wave  
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1st Author's Name Tatsuya Tomura  
1st Author's Affiliation Institute of Science Tokyo (Science Tokyo)
2nd Author's Name Mototaka Arakawa  
2nd Author's Affiliation Tohoku University (Tohoku Univ.)
3rd Author's Name Marie Tabaru  
3rd Author's Affiliation Institute of Science Tokyo (Science Tokyo)
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Speaker Author-1 
Date Time 2025-08-28 14:30:00 
Presentation Time 25 minutes 
Registration for US 
Paper # US2025-28 
Volume (vol) vol.125 
Number (no) no.159 
Page pp.15-20 
#Pages 6 
Date of Issue 2025-08-21 (US) 

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