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Liquid Crystals Volume 36, 2009 - Issue 9
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Original Articles

Characteristics of wide-band reflection of polymer-stabilised cholesteric liquid crystal cell prepared from an unsticking technique

Renwei Guo Department of Materials Physics and Chemistry, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, P.R. China
,
Hui Cao Department of Materials Physics and Chemistry, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, P.R. China
,
Huijing Liu Department of Materials Physics and Chemistry, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, P.R. China
,
Kexuan Li Department of Materials Physics and Chemistry, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, P.R. China
,
Wei Huang Department of Materials Physics and Chemistry, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, P.R. China
,
Jiumei Xiao School of Applied Science, University of Science and Technology Beijing, Beijing, 100083, P. R. China
,
Xiaotao Yuan School of Applied Science, University of Science and Technology Beijing, Beijing, 100083, P. R. China
,
Zhou Yang Department of Materials Physics and Chemistry, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, P.R. China
&
Huai Yang Department of Materials Physics and Chemistry, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, P.R. ChinaCorrespondence[email protected]
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Pages 939-946 | Received 26 May 2009, Accepted 02 Jul 2009, Published online: 22 Sep 2009
 
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Abstract

An unsticking technique was applied for the fabrication of a polymer-stabilised cholesteric liquid crystal (PSCLC) cell. The template of polymer matrix in the planarly aligned cholesteric liquid crystal (Ch-LC) was perfectly preserved by lifting off the hydrophilic antisticking substrate. The desired PSCLC cell could then be obtained by injecting a third Ch-LC sample between two designed templates of PSCLC layer. By adjusting the pitch distribution in the two stacking templates, a reflectivity of nearly 50% incident light could be yielded and the bandwidth of the reflection spectrum could be controlled accurately in the PSCLC cell. Thus, a method to modulate the wide-band reflection of 50% visible light flux range was offered.

Acknowledgements

This work was financially supported by Flat-Panel Display Special Project of China 863 Plan (Grant No. 2008AA03A318), National Science Foundation (Grant No. 20674005) and Projects of Chinese National Science and Tcehnology Tackling Key Problems (Grant No. 2007BAE31B02).

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