1994 Fiscal Year Final Research Report Summary
Bulk reorientation driven by orientational transition in a liquid crystal monolayr
| Project/Area Number |
05453053
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
機能・物性・材料
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| Research Institution | Nagoya University |
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Principal Investigator |
OUCHI Yukiko Nagoya University Dept.of Chem.Associate Prof., 理学部, 助教授 (60194081)
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| Co-Investigator(Kenkyū-buntansha) |
ISHII Hisao Nagoya University Dept.of Chem Res.Associate, 理学部, 助手 (60232237)
SEKI Kazuhiko Nagoya University Dept.of Chem Prof., 理学部, 教授 (80124220)
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| Project Period (FY) |
1993 – 1994
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| Keywords | Liquid Crystal / Orientational Transition / Optical Second Harmonic Generation |
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| Research Abstract |
Experimental set-up for surface optical second harmonic generation (optical SHG) was constructed with Nd : YAG laser. Signal detection system was newly developed with a modification of gated-integrators, which provides a wide range of detection capability for optical SHG experiment.
We have studied the effect of coadsorbed small volatile molecules on the orientaional order of liquid crystal monolayr at the interface between a mica surface and a liquid crystal film. As the chemical potential of the volatile molecules was increased, a first order orientational transition was observed in the monolayr. This surface transition is shown to drive the reorientation of bulk liquid crystal previously observed in these systems.
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