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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/51052


    Title: Phase separation and pattern instability of laser-induced polymerization in liquid-crystal-monomer mixtures
    Authors: Jisha,CP;Hsu,KC;Lin,Y;Lin,JH;Chuang,KP;Tai,CY;Lee,RK
    Contributors: 光電科學與工程學系
    Keywords: DIFFUSION;ALIGNMENT
    Date: 2011
    Issue Date: 2012-03-27 18:16:49 (UTC+8)
    Publisher: 國立中央大學
    Abstract: Directly written by a ultra-short femto-second laser pulse, we report the phase separation and pattern formation induced by polymerization in a liquid-crystal-monomer mixture. By varying the scanning speed of optical fields along a line, pattern transitions of photon-induced polymer structures are illustrated in shapes of double-humped, single-humped, and broken stripes. The experimental data collected by optical microscopic images are in a good agreement with numerical simulations based on a modified set of coupled 2 + 1 dimensional diffusion equations. The demonstration in this work provides a step for controlling phase separation morphologies as well as transferring patterns in polymer-dispersed liquid crystals. (C) 2011 Optical Society of America
    Relation: OPTICAL MATERIALS EXPRESS
    Appears in Collections:[光電科學與工程學系] 期刊論文

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