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Paper Abstract and Keywords
Presentation 2007-09-28 10:30
The basic examination of the gas sensor using a good point of the Lamb wave
Naoki Yamamoto, Yasuhiko Nakagawa, Shoji Kakio (Univ. of Yamanashi) US2007-45
Abstract (in Japanese) (See Japanese page) 
(in English) When the thickness of the substrate is equal or thereunder with a wavelength, the Lamb wave excited efficiently. The Lamb wave reflects the substrate back side and propagates. We suggest the hydrogen gas sensor using the good point of the Lamb wave. We find the film thickness of the response film of the sensor sensitivity, Lamb wave mode dependence by theoretical analysis and an experiment. The Lamb wave delay line was fabricated on a YZ-lithium niobate (YZ-LiNbO3, substrate thickness 91 μm, both mirror faces) substrate by photo-etching methods, using almium metallization. The period of interdigital transducer was 100 μm. The sensitive membrane was deposited on the back side by RF-sputtering method. The PdAg alloy was used as a sensitive membrane. We were able to get sensitivity 5.4 ppm at hydrogen density 9.1 % by the experiment.
Keyword (in Japanese) (See Japanese page) 
(in English) Lamb wave / gas sensor / hydrogen / / / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 233, US2007-45, pp. 13-18, Sept. 2007.
Paper # US2007-45 
Date of Issue 2007-09-21 (US) 
ISSN Print edition: ISSN 0913-5685    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)
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Conference Information
Committee US  
Conference Date 2007-09-27 - 2007-09-28 
Place (in Japanese) (See Japanese page) 
Place (in English) Tohoku Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) General 
Paper Information
Registration To US 
Conference Code 2007-09-US 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) The basic examination of the gas sensor using a good point of the Lamb wave 
Sub Title (in English)  
Keyword(1) Lamb wave  
Keyword(2) gas sensor  
Keyword(3) hydrogen  
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1st Author's Name Naoki Yamamoto  
1st Author's Affiliation University of Yamanashi (Univ. of Yamanashi)
2nd Author's Name Yasuhiko Nakagawa  
2nd Author's Affiliation University of Yamanashi (Univ. of Yamanashi)
3rd Author's Name Shoji Kakio  
3rd Author's Affiliation University of Yamanashi (Univ. of Yamanashi)
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Speaker Author-1 
Date Time 2007-09-28 10:30:00 
Presentation Time 30 minutes 
Registration for US 
Paper # US2007-45 
Volume (vol) vol.107 
Number (no) no.233 
Page pp.13-18 
#Pages 6 
Date of Issue 2007-09-21 (US) 

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