Browsing by Author "Li, Liu S."

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Self Assembled Liquid Crystal Polymers on Photo-Irradiated Alignment Surfaces for Tailoring Response Properties of Liquid Crystal Molecules
(2011-10-20)
Huang, Jung Y.
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Li, Liu S.
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光電工程學系
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Department of Photonics
A liquid crystal polymer (LCP) self-assembled on a photo-irradiated substrate can modify the viscoelastic response of liquid crystal medium on the substrate. Sum-frequency vibrational spectroscopy shows that the phenyl groups of LCP are oriented epitaxially with layer thickness and an in-plane alignment order much higher than that at the photo-irradiated surface can be yielded. The liquid crystal molecules confined between the LCP-coated substrates reveals a stronger correlation among the thermally excited fluctuation modes. Our finding can be used to tailor the boundary forces on alignment substrates and to optimize the device performance.