1993 Fiscal Year Final Research Report Summary
Study on an analogy of nonlinear phenomena in liquid crystals.
| Project/Area Number |
04805004
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
Applied materials
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| Research Institution | OSAKA SANGYO UNIVERSITY |
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Principal Investigator |
SUGIMURA Akihiko OSAKA SANGYO UNIVERSITY, DEPARTMENT OF INFORMATION SYSTEMS ENGINEERING, ASSOCIATE PROFESSOR, 工学部, 助教授 (90145813)
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| Project Period (FY) |
1992 – 1993
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| Keywords | LIQUID CRYSTAL / NONLINEAR OPTICS / membrane current / OPTICAL RECTIFICATION / TRANSIENT CURRENT / MOLECULAR ORDERIMG |
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| Research Abstract |
Anomalous photoinduced current transients in the nematic phase are experimentally observed by illuminating a liquid crystal sample with a Xenon flash lamp pulse while applying a DC voltage. The mechanism has been explained theoretically by using nonlinear optical Pockel's effect induced by Freedericksz transition.
Current transient is elucidated by the effect of dc field-induced ion drift to electrodes based on an equivalent circuit. Ti is shown that the anomalous current is naturally similar to the membrane current in a living system. As an example, an optical parallel processing device using an elemental neural model is proposed for pattern recognition.
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