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Paper Abstract and Keywords
Presentation 2008-01-29 13:00
Elasticity Control of Piezoelectric Material Connected with Negative Capacitance Circuits
Jun Takarada, Hiroaki Ueda (Kansai Univ.), Munehiro Date, Eiichi Fukada (Kobayasi Inst. of Phys. Res.), Ken Yamamoto, Yoshiro Tajitsu (Kansai Univ.) US2007-101 EA2007-106
Abstract (in Japanese) (See Japanese page) 
(in English) Elasticity control was performed in piezoelectric lead zirconate titanate (PZT) ceramics and poly (L-lactic acid) (PLLA) by connecting an electric circuit that behaves as a “negative capacitor”. Theoretically, when the value of the external negative capacitance is increased, the observed elastic constant increases from that at an open circuit to positive infinity at around the value of the sample, turns to negative infinity, and then increases through zero to that at a short circuit. By coupling the negative capacitance, the dynamic elastic constant of PZT changed between 0.5 and 2 times, and PLLA changed between 0.8 and 1.2 times the original value.
Keyword (in Japanese) (See Japanese page) 
(in English) Elasticity Control / Piezoelectric Ceramics / Piezoelectric Polymer / Negative-Capacitance Circuit / / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 468, US2007-101, pp. 29-32, Jan. 2008.
Paper # US2007-101 
Date of Issue 2008-01-22 (US, EA) 
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)
Download PDF US2007-101 EA2007-106

Conference Information
Committee EA US  
Conference Date 2008-01-28 - 2008-01-29 
Place (in Japanese) (See Japanese page) 
Place (in English) Kansai University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) General 
Paper Information
Registration To US 
Conference Code 2008-01-EA-US 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Elasticity Control of Piezoelectric Material Connected with Negative Capacitance Circuits 
Sub Title (in English)  
Keyword(1) Elasticity Control  
Keyword(2) Piezoelectric Ceramics  
Keyword(3) Piezoelectric Polymer  
Keyword(4) Negative-Capacitance Circuit  
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1st Author's Name Jun Takarada  
1st Author's Affiliation Kansai University (Kansai Univ.)
2nd Author's Name Hiroaki Ueda  
2nd Author's Affiliation Kansai University (Kansai Univ.)
3rd Author's Name Munehiro Date  
3rd Author's Affiliation Kobayasi Institute of Physical Research (Kobayasi Inst. of Phys. Res.)
4th Author's Name Eiichi Fukada  
4th Author's Affiliation Kobayasi Institute of Physical Research (Kobayasi Inst. of Phys. Res.)
5th Author's Name Ken Yamamoto  
5th Author's Affiliation Kansai University (Kansai Univ.)
6th Author's Name Yoshiro Tajitsu  
6th Author's Affiliation Kansai University (Kansai Univ.)
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Speaker Author-1 
Date Time 2008-01-29 13:00:00 
Presentation Time 30 minutes 
Registration for US 
Paper # US2007-101, EA2007-106 
Volume (vol) vol.107 
Number (no) no.468(US), no.470(EA) 
Page pp.29-32(US), pp.31-34(EA) 
#Pages 4 
Date of Issue 2008-01-22 (US, EA) 

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