Chinese Optics Letters, 2017, 15 (6): 061601, Published Online: Jul. 20, 2018
Real-time observation of liquid crystal molecular directions based on a snapshot polarimeter Download: 654次
Abstract
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 kHz 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.
Jing Ma, Canhua Xu, Yangguang Yao. Real-time observation of liquid crystal molecular directions based on a snapshot polarimeter[J]. Chinese Optics Letters, 2017, 15(6): 061601.