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자료유형
학술대회자료
저자정보
Hahm, Seok-Gyu (Department of Chemistry, Center for Integrated Molecular Systems, Division of Molecular and Life Sciences, BK21 Program, and Polymer Research Institute, Pohang University of Science and) Lee, Taek-Joon (Department of Chemistry, Center for Integrated Molecular Systems, Division of Molecular and Life Sciences, BK21 Program, and Polymer Research Institute, Pohang University of Science and) Lee, Seung-Woo (Department of Chemistry, Center for Integrated Molecular Systems, Division of Molecular and Life Sciences, BK21 Program, and Polymer Research Institute, Pohang University of Science and) Yoon, Jin-Hwan (Department of Chemistry, Center for Integrated Molecular Systems, Division of Molecular and Life Sciences, BK21 Program, and Polymer Research Institute, Pohang University of Science and) Kim, Gha-Hee (Department of Chemistry, Center for Integrated Molecular Systems, Division of Molecular and Life Sciences, BK21 Program, and Polymer Research Institute, Pohang University of Science and T) Chang, Tai-Hyun (Depar) Ree, Moon-Hor
저널정보
한국정보디스플레이학회 한국정보디스플레이학회 International Meeting 한국정보디스플레이학회 2004년도 Asia Display / IMID 04
발행연도
2004.1
수록면
899 - 902 (4page)

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The molecular reorientations and surface morphologies of rubbed films formed from atactic polystyrene (PS) samples with various molecular weights were investigated in detail. Previously unknown surface topography features were newly discovered in rubbed films, depending on molecular weights: submicroscale groove-like meandering structures composed of fine-grooves like pebbles in tens nanometers are present, oriented perpendicular to the rubbing direction. The vinyl main chains, however, were preferentially reoriented along the rubbing direction and the planes of the phenyl side groups were preferentially reoriented perpendicular to the rubbing direction with para-directions that were positioned nearly normal to the film plane. Nematic liquid crystal (LC) molecules were found to always align on the rubbed PS surfaces along the orientation direction of the submicroscale grooves generated by rubbing.

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