Influence of Flexoelectric Effect on Guided Mode of Hybrid-Aligned Nematic Liquid Crystal

Hong-yu, 邢红玉 Xing; Wen-jiang, 叶文江 Ye; Libin, 司立彬 Si; Zhi-guang, 李志广 Li; Zhi-dong, 张志东 Zhang; Li, 宣丽 Xuan

doi:10.3788/aos201333.0223002

Cited by 1 publication

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“…11,14 The curves of the polarization conservation (pp, ss) and polarization conversion (ps, sp) components of R and T as functions of internal angles can be simulated using multi-layer optical theory based on director distributions. [25][26][27][28] …”

Section: Theorymentioning

confidence: 99%

“…5 However, Harden et al 6 proposed that the flexoelectric coefficient in bent-core nematics is 10 3 times higher than that in rod-like systems; the discrepancy in the results provides another reason for examining the flexoelectric coefficient. [7][8][9][10][11][12][13] Various experimental techniques have been developed to measure flexoelectric coefficients; [14][15][16][17][18][19][20][21][22] most of these techniques use the hybrid-aligned nematic (HAN) cell because the LC material filled in HAN cell contains splay and bend distortions in the initial state and thus present evident flexoelectric properties.…”

Section: Introductionmentioning

confidence: 99%

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Determination of the flexoelectric coefficient (e1–e3) in nematic liquid crystal by using fully leaky optical-guided mode

Zheng

Zhang

et al. 2016

AIP Advances

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Fully leaky optical-guided mode was employed to determine the difference in the splay and bend flexoelectric coefficient (e1–e3) in negative nematic liquid crystal MS-N01300-000. The experimental curves of reflectivity versus internal angle (angle of incident light to the liquid crystal) were obtained when a laser beam passed through the hybrid-aligned nematic in-plane switching liquid crystal cell; the cell was embedded in pyramid-coupled waveguide with different alternating current (AC) and direct current (DC) voltages. The curves of the applied DC with voltage similar to that of AC shift to the left or the right. Experimental results were then compared with theoretical results derived from elastic continuum theory and multi-layer optical theory of liquid crystals. The approximate value of the flexoelectric coefficient (e1–e3) of MS-N01300-000 is 9.0 × 10−11 C/m.

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