Liquid Crystal Alignment Effects for Nematic Liquid Crystal on Homeotropic Polyimide Surface Using New Ion-Beam Source
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概要
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We have studied the liquid crystal (LC) alignment and tilt angle generation of a nematic liquid crystal (NLC) on a homeotropic polyimide (PI) surface using a new ion beam source. The tilt angle of the NLC on the homeotropic PI surface for all incident angles is about 38° and this angle has a stabilization trend. A good LC alignment of the NLC on the homeotropic PI surface by to exposure ion beam of 45° incidence angle was observed. Also, the tilt angle of the NLC on the homeotropic PI surface by to exposure ion beam of 45° incidence angle had a tendency to decrease as ion beam energy density increased. Thus, we demonstrated that the tilt angle could be controlled from vertical to horizontal directions. Also, the alignment character of the NLC on the homeotropic PI surface with respect to ion beam energy was good at more than 1500 eV. Finally, a superior LC alignment thermal stability on the homeotropic PI surface subject to ion beam exposure was achieved.
- 2007-10-15
著者
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MOON Byung-Moo
Department of Electrical Engineering and Institute for Nano Science, Korea University
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Han Jin-woo
Department Of Electrical And Electronic Engineering Yonsei University
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Kim Young-hwan
Department Of Electrical And Electronic Engineering Yonsei University
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Oh Byeong-yun
Department Of Materials Science And Engineering Yonsei University
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KIM Sang-Hoon
Department of Electrical and Electronic Engineering, Yonsei University
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Seo Dae-shik
Department Of Electrical & Computer Engineering College Of Engineering Yonsei University
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Kim Jae-Hyung
Department of Internal Medicine, College of Medicine, The Catholic University of Korea
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Kim Byoung-yong
Department Of Electrical And Electronic Engineering College Of Engineering Yonsei University
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Kim Jong-yeon
Department Of Physiology And Obesity-diabetes Advanced Research Center Yeungnam University College O
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Kim Jong-hwan
Department Of Electrical And Electronic Engineering College Of Engineering Yonsei University
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Hwang Jeoung-yeon
Department Of Electrical & Computer Engineering College Of Engineering Yonsei University
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Lee Jin-woo
Department Of Biomedical Engineering College Of Medicine Kyunghee University
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Kang Dong-hun
Department Of Electrical And Electronic Engineering College Of Engineering Yonsei University
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Ok Chul-Ho
Department of Electrical and Electronic Engineering (C-724), College of Engineering, Yonsei University, 134 Shinchon-dong, Seodaemoon-ku, Seoul 120-749, Korea
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Han Jeong-Min
Department of Electrical and Electronic Engineering (C-724), College of Engineering, Yonsei University, 134 Shinchon-dong, Seodaemoon-ku, Seoul 120-749, Korea
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Lee Sang-Keuk
Department of Electrical and Electronic Engineering, College of Engineering, Yonsei University, 134 Shinchon-dong, Seodaemoon-ku, Seoul 120-749, Korea
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Lee Jin-Woo
Department of Electrical Engineering, College of Engineering, Korea University, Sungbuk-gu, Seoul 136-701, Korea
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Kim Jae-Hyung
Department of Physics, Inje University, Kimhae, Kyungnam 621-749, Korea
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Han Jin-Woo
Department of Electrical and Electronic Engineering (C-724), College of Engineering, Yonsei University, 134 Shinchon-dong, Seodaemoon-ku, Seoul 120-749, Korea
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Kang Dong-Hun
Department of Electrical and Electronic Engineering (C-724), College of Engineering, Yonsei University, 134 Shinchon-dong, Seodaemoon-ku, Seoul 120-749, Korea
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Kim Byoung-Yong
Department of Electrical and Electronic Engineering (C-724), College of Engineering, Yonsei University, 134 Shinchon-dong, Seodaemoon-ku, Seoul 120-749, Korea
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Kim Jae-Hyung
Department of Electronics Engineering, Korea Polytechnic University
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Kim Sang-Hoon
Department of Electrical and Electronic Engineering, College of Engineering, Yonsei University, 134 Shinchon-dong, Seodaemoon-ku, Seoul 120-749, Korea
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Kim Sang-Hoon
Department of Electrical and Electronic Engineering (C-724), College of Engineering, Yonsei University, 134 Shinchon-dong, Seodaemoon-ku, Seoul 120-749, Korea
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Oh Byeong-Yun
Department of Electrical and Electronic Engineering, Yonsei University, 262 Seongsanno, Seodaemun-gu, Seoul 120-749, Republic of Korea
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Moon Byung-Moo
Department of Electrical Engineering, College of Engineering, Korea University, Sungbuk-gu, Seoul 136-701, Korea
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Kim Jong-Yeon
Department of Electrical and Electronic Engineering, College of Engineering, Yonsei University, 134 Shinchon-dong, Seodaemoon-ku, Seoul 120-749, Korea
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Lee Sang-Keuk
Department of Electrical and Electronic Engineering (C-724), College of Engineering, Yonsei University, 134 Shinchon-dong, Seodaemoon-ku, Seoul 120-749, Korea
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Kim Jong-Hwan
Department of Electrical & Electronic Engineering, College of Engineering, Yonsei University, 134 Shinchon-dong, Seodaemoon-ku, Seoul 120-749, Korea
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Oh Byeong-Yun
Department of Electrical and Electronic Engineering, College of Engineering, Yonsei University, 134 Shinchon-dong, Seodaemoon-ku, Seoul 120-749, Korea
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