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Liquid Crystals Volume 42, 2015 - Issue 2
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Original Articles

Cell gap effects on domain size and electro-optical properties of normal-mode polymer-stabilised cholesteric texture

Xiaoyue HeKey Lab of Special Display Technology, Ministry of Education, National Engineering Lab of Special Display Technology, State Key Lab of Advanced Display Technology, Academy of Opto-Electronic Technology, Hefei University of Technology, Hefei, People’s Republic of China;Key Laboratory of Advanced Functional Materials and Devices, Anhui Province, School of Chemical Engineering, Hefei University of Technology, Hefei, Anhui, People’s Republic of ChinaView further author information
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Hongbo LuKey Lab of Special Display Technology, Ministry of Education, National Engineering Lab of Special Display Technology, State Key Lab of Advanced Display Technology, Academy of Opto-Electronic Technology, Hefei University of Technology, Hefei, People’s Republic of China;Key Laboratory of Advanced Functional Materials and Devices, Anhui Province, School of Chemical Engineering, Hefei University of Technology, Hefei, Anhui, People’s Republic of ChinaCorrespondence[email protected]
View further author information
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Zongquan WuKey Lab of Special Display Technology, Ministry of Education, National Engineering Lab of Special Display Technology, State Key Lab of Advanced Display Technology, Academy of Opto-Electronic Technology, Hefei University of Technology, Hefei, People’s Republic of China;Key Laboratory of Advanced Functional Materials and Devices, Anhui Province, School of Chemical Engineering, Hefei University of Technology, Hefei, Anhui, People’s Republic of ChinaView further author information
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Zhigang SongKey Lab of Special Display Technology, Ministry of Education, National Engineering Lab of Special Display Technology, State Key Lab of Advanced Display Technology, Academy of Opto-Electronic Technology, Hefei University of Technology, Hefei, People’s Republic of China;School of Instrument Science and Opto-electronic Engineering, Hefei University of Technology, Hefei, People’s Republic of ChinaView further author information
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Longzhen QiuKey Lab of Special Display Technology, Ministry of Education, National Engineering Lab of Special Display Technology, State Key Lab of Advanced Display Technology, Academy of Opto-Electronic Technology, Hefei University of Technology, Hefei, People’s Republic of ChinaView further author information
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Xianghua WangKey Lab of Special Display Technology, Ministry of Education, National Engineering Lab of Special Display Technology, State Key Lab of Advanced Display Technology, Academy of Opto-Electronic Technology, Hefei University of Technology, Hefei, People’s Republic of ChinaView further author information
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Guobing ZhangKey Lab of Special Display Technology, Ministry of Education, National Engineering Lab of Special Display Technology, State Key Lab of Advanced Display Technology, Academy of Opto-Electronic Technology, Hefei University of Technology, Hefei, People’s Republic of ChinaView further author information
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Juntao HuKey Lab of Special Display Technology, Ministry of Education, National Engineering Lab of Special Display Technology, State Key Lab of Advanced Display Technology, Academy of Opto-Electronic Technology, Hefei University of Technology, Hefei, People’s Republic of ChinaView further author information
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Guoqiang LvKey Lab of Special Display Technology, Ministry of Education, National Engineering Lab of Special Display Technology, State Key Lab of Advanced Display Technology, Academy of Opto-Electronic Technology, Hefei University of Technology, Hefei, People’s Republic of ChinaView further author information
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Pages 255-260 | Received 19 Sep 2014, Accepted 02 Nov 2014, Published online: 15 Jan 2015
 
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Abstract

The effects of cell gap on the electro-optical properties of normal-mode polymer-stabilised cholesteric texture (PSCT) have been investigated. In this study, the size of the domain and electro-optical properties of PSCT are analysed as a function of the thickness of the cells. Increasing cell gap helps to improve the contrast ratio, but the threshold voltage would increase simultaneously. The scanning electron microscopy indicates that the polymer networks are tightened with increasing cell gap. A denser polymer network leads to smaller domain size, higher effective electric field and decreased field-off response time.

Additional information

Funding

This research was supported by National Basic Research Program of China [grant number 2012CB723406]; National Natural Science Foundation of China [grant number 61107014], [grant number 51203039], [grant number 2120417]; Program for New 275 Century Excellent Talents in University [grant number NCET-12-0839]; National High Technology Research and Development Program of China [grant number 2012AA011901].

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