Molecular orientation and alignment of rubbed poly(vinyl cinnamate) surfaces.
We observed that weakly and strongly rubbed polyvinyl-cinnamate surfaces align liquid crystal films perpendicular and parallel to the rubbing direction, respectively. Surface-specific sum-frequency vibrational spectroscopy was used to probe molecular orientations and alignments of the rubbed surfaces and provide a molecular-level understanding of the observation.
Pagliusi
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Department of Physics and LiCryL CNR-INFM, University of Calabria, 87036 Rende, Italy.
Chen
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Shen
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