Optical Textures and Orientational Structures in Cholesteric Droplets with Conical Boundary Conditions

Molecules

MikhailN. Krakhalev¹  AnnaP. Gardymova¹  VictorYa. Zyryanov² 

[1] Institute of Engineering Physics and Radio Electronics, Siberian Federal University, 660041 Krasnoyarsk, Russia;Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 660036 Krasnoyarsk, Russia;

关键词: cholesteric liquid crystal;    droplet;    optical texture;    orientational structure;    conical surface anchoring;    topological defect;   

DOI  :  10.3390/molecules25071740

来源: DOAJ

【 摘 要 】

Cholesteric droplets dispersed in polymer with conical boundary conditions have been studied. The director configurations are identified by the polarising microscopy technique. The axisymmetric twisted axial-bipolar configuration with the surface circular defect at the droplet’s equator is formed at the relative chirality parameter $N_0\le 2.9$ . The intermediate director configuration with the deformed circular defect is realised at $2.9<N_0<3.95$ , and the layer-like structure with the twisted surface defect loop is observed at $N_0\ge 3.95$ . The cholesteric layers in the layer-like structure are slightly distorted although the cholesteric helix is untwisted.

【 授权许可】

Unknown