各向异性晶格变形对聚合物稳定蓝相液晶克尔系数的影响。

Effect of anisotropic lattice deformation on the Kerr coefficient of polymer-stabilized blue-phase liquid crystals.

作者信息

Tone Hiroki, Yoshida Hiroyuki, Yabu Shuhei, Ozaki Masanori, Kikuchi Hirotsugu

机构信息

Graduate School of Electrical, Electronic and Information Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan.

Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka 816-8580, Japan.

出版信息

Phys Rev E Stat Nonlin Soft Matter Phys. 2014 Jan;89(1):012506. doi: 10.1103/PhysRevE.89.012506. Epub 2014 Jan 21.

DOI:10.1103/PhysRevE.89.012506

PMID:24580245

Abstract

We investigate the effect of anisotropic lattice deformation on the Kerr coefficient of polymer-stabilized blue-phase liquid crystals (PSBP-LCs). PSBPs with orthorhombic and tetragonal symmetry were prepared by polymer-stabilizing a blue-phase liquid crystal under electrostriction. Both orthorhombic and tetragonal PSBPs showed smaller Kerr coefficients than the cubic PSBP, despite an increase in the unit cell volume caused by the elongation of the lattice along the direction of light propagation. Our results indicate that the Kerr coefficient of PSBPs is not determined simply by the volume of the unit lattice but by the lattice size perpendicular to the direction of light propagation.

摘要

我们研究了各向异性晶格变形对聚合物稳定蓝相液晶（PSBP-LCs）克尔系数的影响。通过在电致伸缩作用下对蓝相液晶进行聚合物稳定化处理，制备了具有正交和四方对称性的PSBPs。尽管沿光传播方向晶格伸长导致晶胞体积增大，但正交和四方PSBPs的克尔系数均小于立方PSBP。我们的结果表明，PSBPs的克尔系数并非简单地由单位晶格体积决定，而是由垂直于光传播方向的晶格尺寸决定。