Control of Liquid Crystal Alignment on SiOx Film Surfaces by Low-Energy Ion Beam
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概要
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In this paper, liquid crystal alignment on SiOx film surfaces irradiated by a low-energy ion beam is systematically examined experimentally. As a consequence of low-energy ion beam exposure, LCs can be aligned vertically when a high rms of electric potential is present on SiOx film surfaces on the basis of electric force microscopy data, while they can be aligned homogeneously when a low rms of electric potential is present on those surfaces. It is also found by X-ray photoemission spectroscopy and the contact angle method that, for the vertical alignment, the absorption curve shifts to a lower binding energy and a higher contact angle, respectively. All experimental results consistently show that the Coulomb interaction between LC molecules and inorganic film surfaces has a dominant effect on LC alignment on films irradiated by a low-energy ion beam.
- 2009-05-25
著者
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Kim Jae
School Of Chemical Engineering College Of Engineering Seoul National University
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Lim Soon
LCD Business, Samsung Electronics Co., Ltd., Gyeonggi-do 446-711, Korea
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Souk Jun
LCD Business, Samsung Electronics Co., Ltd., Gyeonggi-do 446-711, Korea
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Yoon Tae-Hoon
School of Electrical Engineering, Pusan National University, Busan 609-735, Korea
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Son Phil
School of Electrical Engineering, Pusan National University, Busan 609-735, Korea
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Shin Sung
LCD Business, Samsung Electronics Co., Ltd., Gyeonggi-do 446-711, Korea
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Rho Soon
LCD Business, Samsung Electronics Co., Ltd., Gyeonggi-do 446-711, Korea
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Kim Jang
LCD Business, Samsung Electronics Co., Ltd., Gyeonggi-do 446-711, Korea
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Park Jeung
Department of Materials Science and Engineering, University of California at Los Angeles, Los Angeles, CA 90095, U.S.A.
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Kim Jae
School of Electrical Engineering, Pusan National University, Busan 609-735, Korea
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Yoon Tae-Hoon
School of Electrical Engineering, Engineering, Research Institute of Computer, Information and Communication, Pusan National University, Busan 609-735, Korea
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Kim Jae
School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Korea
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