期刊
LIQUID CRYSTALS
卷 41, 期 11, 页码 1600-1604出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/02678292.2014.935505
关键词
swelling; nematic liquid crystal; pretilt angle; adsorption
资金
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT & Future Planning [NRF-2013R1A1A1058681]
- Chonbuk National University
We examined the effect of an electric field applied during the injection procedure on the polar pretilt angle of a nematic liquid crystal (LC). The pretilt angle of the sample injected at 25 degrees C gradually increased as the electric field was increased. On the other hand, the pretilt angle of a sample injected at 90 degrees C (which is above the nematic-isotropic phase transition temperature of LC) showed a sudden increase in the presence of the electric field and also increased with a greater electric field. We think the alignment layer might be swollen with LC molecules, and the rotation of the immersed LC molecules by the electric field induces a deformation of the alignment layer. These results imply LC and the alignment layer were coupled, and their cooperation had an influence on determining the bulk pretilt angle.
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