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Influence of Curing Frequency on the Morphology and the Electro-Optical Property of Polymer-Stabilized Cholesteric Textures |
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| Authors: | Hongbo Lu Jun Zhang Minghui Wang Zhigang Song Xianfeng Xiong Guangqing Lin |
| Institution: | 1. Key Lab of Special Display Technology, Ministry of Education , Hefei University of Technology , Hefei , People's Republic of China;2. National Engineering Lab of Special Display Technology , Hefei University of Technology , Hefei , People's Republic of China;3. State Key Lab of Advanced Display Technology , Hefei University of Technology , Hefei , People's Republic of China;4. State Key Lab of Advanced Display Technology , Hefei University of Technology , Hefei , People's Republic of China;5. Academy of Opto-Electronic Technology , Hefei University of Technology , Hefei , People's Republic of China |
| Abstract: | The effect of curing frequency on the morphology of polymer networks and the electro-optical property of normal-mode polymer-stabilized cholesteric textures (PSCTs) has been investigated. The scanning electron microscopy indicates that the shape of polymer networks transforms from honeycomb-like to fiber-like due to the increased solubility of the monomer at higher curing frequencies. The PSCTs cured at lower frequencies with sufficiently large network voids show a two-stage reorientation process that correlates with two kinds of cholesteric liquid crystal (LC) under different environments. The threshold voltage decreases as the curing frequency increases from 1 Hz to 10,000 Hz, while the field-off response time increases. |
| Keywords: | Curing frequency electro-optical property morphology of polymer network polymer-stabilized cholesteric textures two-stage reorientation process |