Director distributions of nematic liquid crystals in hybrid arrangement cylindrical cells

Hong-hong, 刘红红 Liu; Yan-jun, 张艳君 Zhang

doi:10.3788/yjyxs20173201.0013

液晶与显示

2017

DOI: 10.3788/yjyxs20173201.0013

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Director distributions of nematic liquid crystals in hybrid arrangement cylindrical cells

刘红红 Liu Hong-hong¹,

张艳君 Zhang Yan-jun²

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Influence of Flexoelectric Effect on Director Alignment of Nematic Liquid Crystals in Axial Arrangement Cylindrical Cells

Liu¹,

Zhang²,

Yue³

et al. 2018

Chinese Phys. Lett.

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A positive nematic liquid crystal (5CB) sample is confined in cylindrical cells under strong or weak axial anchoring boundary conditions when a radial nonuniform low-frequency electric field is applied and the flexoelectric effect is taken into account. Based on the Frank elastic free energy, the surface energy of the Rapini–Papoular approximation, the polarization free energy and the flexoelectric free energy caused by electric field, we obtain the free energy density of the nematic and solve the corresponding Euler–Lagrange equation numerically. We investigate the director distribution, the critical voltage and the critical exponent of nematic liquid crystal in cylindrical cells. It follows that the critical exponent is the classical one. It is also shown that the critical voltage in the system is affected by the flexoelectric effect, the geometric effect and radial weak anchoring effect on the cylindrical surfaces. A new type of director transition caused by the flexoelectric effect, the dielectric coupling effect and the radial weak anchoring effect is found.

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Influence of Flexoelectric Effect on Director Alignment of Nematic Liquid Crystals in Axial Arrangement Cylindrical Cells

Liu¹,

Zhang²,

Yue³

et al. 2018

Chinese Phys. Lett.

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show abstract

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Director distributions of nematic liquid crystals in hybrid arrangement cylindrical cells

Cited by 1 publication

References 0 publications

Influence of Flexoelectric Effect on Director Alignment of Nematic Liquid Crystals in Axial Arrangement Cylindrical Cells

Influence of Flexoelectric Effect on Director Alignment of Nematic Liquid Crystals in Axial Arrangement Cylindrical Cells

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