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Paper Abstract and Keywords
Presentation 2013-10-11 16:00
Application of nonuniformity in optical texture of nematic and chiral nematic liquid crystals for security
Keizo Nakayama (Kinki Univ.), Junji Ohtsubo (Shizuoka Univ.) OME2013-65
Abstract (in Japanese) (See Japanese page) 
(in English) Various optical textures that reflect the nonuniformity of the molecular orientation can be observed using a polarizing microscope for a combination of liquid crystal phases and glass surface conditions. The optical textures in the nematic and the chiral nematic are called as schlieren and fingerprint texture, respectively. Due to the randomness of the textures, although all devices with nonuniform optical textures are made under the same condition, they should have different patterns like human fingerprints. So we have proposed the security devices using random patterns of optical texture as high-security identification information.
Keyword (in Japanese) (See Japanese page) 
(in English) Secyrity Device / Liquid Crystal / Optical Texture / Nonuniformity / Randomness / Identification Information / /  
Reference Info. IEICE Tech. Rep., vol. 113, no. 243, OME2013-65, pp. 73-76, Oct. 2013.
Paper # OME2013-65 
Date of Issue 2013-10-04 (OME) 
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 OME2013-65

Conference Information
Committee OME  
Conference Date 2013-10-11 - 2013-10-11 
Place (in Japanese) (See Japanese page) 
Place (in English) Osaka Univ. Nakanoshima Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Organic Device/Sensor, etc. 
Paper Information
Registration To OME 
Conference Code 2013-10-OME 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Application of nonuniformity in optical texture of nematic and chiral nematic liquid crystals for security 
Sub Title (in English)  
Keyword(1) Secyrity Device  
Keyword(2) Liquid Crystal  
Keyword(3) Optical Texture  
Keyword(4) Nonuniformity  
Keyword(5) Randomness  
Keyword(6) Identification Information  
Keyword(7)  
Keyword(8)  
1st Author's Name Keizo Nakayama  
1st Author's Affiliation Kinki University (Kinki Univ.)
2nd Author's Name Junji Ohtsubo  
2nd Author's Affiliation Shizuoka University (Shizuoka Univ.)
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Speaker Author-1 
Date Time 2013-10-11 16:00:00 
Presentation Time 20 minutes 
Registration for OME 
Paper # OME2013-65 
Volume (vol) vol.113 
Number (no) no.243 
Page pp.73-76 
#Pages 4 
Date of Issue 2013-10-04 (OME) 

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