Alignment Control of a Nematic Liquid Crystal on a Doubly Treated Substrate
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概要
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We have investigated the molecular orientation of a nematic liquid crystal (LC) on a doubly treated substrate. One of the substrate surfaces was first treated with the photo-exposure or rubbing process and then subsequently treated with the second photo-exposure process as a function of the irradiation time while the other was prepared with a rubbed polyimide layer for strong anchoring. The LC orientation on the doubly treated substrate was well controlled either by the irradiation time or by the rubbing strength. The observed molecular orientation was consistent with the simulation results based on a torque balance equation. The anchoring energies of the treated substrates were determined from the least-squares fits of the experimental data to the torque balance equation.
- 2003-04-15
著者
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Takanishi Yoichi
Department Of Organic And Polymeric Materials Tokyo Institute Of Technology
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Chung Doo-han
Department Of Organic And Polymeric Materials Tokyo Institute Of Technology
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Takezoe Hideo
Department Of Organic And Polymeric Materials Tokyo Institute Of Technology
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Yu Chang-jae
School Of Electric Engineering #32 Seoul National University
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Ishikawa Ken
Department Of Organic And Polymeric Materials Tokyo Institute Of Technology
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Lee Sin-doo
School Of Electric Engineering #32 Seoul National University
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Chung Doo-Han
Department of Organic and Polymeric Materials, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8552, Japan
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Lee Sin-Doo
School of Electrical Engineering #32, Seoul National University, Kwanak PO Box 34, Seoul 151-742, Korea
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ISHIKAWA Ken
Department of Applied Physics, University of Tokyo
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Yu Chang-Jae
School of Electrical Engineering #32, Seoul National University, Kwanak PO Box 34, Seoul 151-742, Korea
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