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| 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 Link to ES Tech. Rep. Archives: OME2013-65 |
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| 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 Link to ES Tech. Rep. Archives: OME2013-65 |
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| 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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