Liquid crystal alignment on a ZrO2 thin film as a function of ion beam incident angle |
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Authors: | Byoung-Yong Kim Young-Hwan Kim Hong-Gyu Park |
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Institution: | Information Display Device Laboratory, School of Electrical and Electronic Engineering, Yonsei University , Seodaemun-Gu, Seoul, Korea |
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Abstract: | Nematic liquid crystal alignment capabilities and electro-optical performance characteristics have first been embodied in a ZrO2 layer using ion-beam irradiation. The study demonstrates that liquid crystal layers can be aligned homogeneously as a function of the incident angle of the ion beam device, which causes a uniform dense plasma. X-ray photoelectron spectroscopy indicated that full oxidation of the ZrO2 thin-film surfaces was produced by ion irradiation, shifting the Zr 3d spectra to lower binding energies. In addition, the electro-optical performance characteristics of twisted nematic cells on a ZrO2 thin-film layer after ion beam irradiation showed similar characteristics to those of a rubbed polyimide cell. |
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Keywords: | zirconium oxide ion beam irradiation liquid crystal alignment XPS analysis |
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