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Real-time observation of liquid crystal molecular directions based on a snapshot polarimeter

Real-time observation of liquid crystal molecular directions based on a snapshot polarimeter
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摘要 The polarization state of transmitted light is linked to liquid crystal(LC) molecular distribution. The dynamic behavior of a twisted nematic LC molecule is measured with a home-built 10 k Hz snapshot polarimeter. Only the transient molecule rotations are observed when the external voltage changes, and the molecules return to their original orientations quickly even when high voltage is applied. Our observations cannot be attributed to the traditional electro-optic effect. The invalidation of the static external field indicates the shielding effect of redistributing impurity ions in an LC cell. The polarization state of transmitted light is linked to liquid crystal(LC) molecular distribution. The dynamic behavior of a twisted nematic LC molecule is measured with a home-built 10 k Hz snapshot polarimeter. Only the transient molecule rotations are observed when the external voltage changes, and the molecules return to their original orientations quickly even when high voltage is applied. Our observations cannot be attributed to the traditional electro-optic effect. The invalidation of the static external field indicates the shielding effect of redistributing impurity ions in an LC cell.
出处 《Chinese Optics Letters》 SCIE EI CAS CSCD 2017年第6期58-62,共5页 中国光学快报(英文版)
基金 supported in part by the National Natural Science Fund of China under Grant No.61177072
关键词 impurity nematic return attributed shielding quickly directions optic twisted director impurity nematic return attributed shielding quickly directions optic twisted director
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