Improvement in planar orientation of the polymer-stabilized cholesteric liquid crystal cells

Ching Jui Tien; Chi Yen Huang

doi:10.1143/JJAP.47.8515

Improvement in planar orientation of the polymer-stabilized cholesteric liquid crystal cells

Ching Jui Tien, Chi Yen Huang

Graduate Institute of Photonics

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

We investigate the effects of thermal annealing on the improvement in the planar orientation of the polymer-stabilized cholesteric liquid crystal (CLC) cell. The obtained results reveal that annealing the CLC/monomer mixture at the CLC-isotropic transition temperature (T_ci) effectively reduces the viscosity of the CLC/monomer mixture, accelerating the annihilation of oily streaks. Increasing the annealing time effectively removes the oily streaks, giving the polymer-stabilized CLC cell a high transmittance and a sharp stop band edge. An 8-μm-thick polymer-stabilized CLC cell with a defect-free planar texture is achieved when the annealing time of the cell exceeds 10 min.

Original language	English
Pages (from-to)	8515-8517
Number of pages	3
Journal	Japanese Journal of Applied Physics
Volume	47
Issue number	11
DOIs	https://doi.org/10.1143/JJAP.47.8515
Publication status	Published - 2008 Nov 14

All Science Journal Classification (ASJC) codes

Engineering(all)
Physics and Astronomy(all)

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abstract = "We investigate the effects of thermal annealing on the improvement in the planar orientation of the polymer-stabilized cholesteric liquid crystal (CLC) cell. The obtained results reveal that annealing the CLC/monomer mixture at the CLC-isotropic transition temperature (Tci) effectively reduces the viscosity of the CLC/monomer mixture, accelerating the annihilation of oily streaks. Increasing the annealing time effectively removes the oily streaks, giving the polymer-stabilized CLC cell a high transmittance and a sharp stop band edge. An 8-μm-thick polymer-stabilized CLC cell with a defect-free planar texture is achieved when the annealing time of the cell exceeds 10 min.",

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AB - We investigate the effects of thermal annealing on the improvement in the planar orientation of the polymer-stabilized cholesteric liquid crystal (CLC) cell. The obtained results reveal that annealing the CLC/monomer mixture at the CLC-isotropic transition temperature (Tci) effectively reduces the viscosity of the CLC/monomer mixture, accelerating the annihilation of oily streaks. Increasing the annealing time effectively removes the oily streaks, giving the polymer-stabilized CLC cell a high transmittance and a sharp stop band edge. An 8-μm-thick polymer-stabilized CLC cell with a defect-free planar texture is achieved when the annealing time of the cell exceeds 10 min.

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