Evaluation of Kerr constant of blue-phase liquid crystals by measuring off-axis retardation in vertical electric field cells

Pao Ju Hsieh*, Huang-Ming Chen

*此作品的通信作者

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3 引文 斯高帕斯(Scopus)

摘要

Because of the nonuniform electric field of the in-plane-switching cell in the thickness direction, an accurate and efficient way for evaluating the Kerr constant of blue-phase liquid crystal (BPLC) needs to be developed. This study demonstrates a method for evaluating the Kerr constant by measuring the off-axisinduced retardation (Rth) change in normal vertical field cells using a commercial polarimeter. The angledependent behavior of the R th change is observed as an electric-tunable positive C retarder. In this paper, a sigmoid fitting model has been chosen for calculating the Kerr constant for considering the very small intrinsic birefringence of the BPLC.

原文English
頁(從 - 到)5299-5302
頁數4
期刊Applied Optics
50
發行號27
DOIs
出版狀態Published - 20 9月 2011

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