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

ABSTRACT: 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 ? 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 ? 3.95 . The cholesteric layers in the layer-like structure are slightly distorted although the cholesteric helix is untwisted.

SUBMITTER: Gardymova AP

PROVIDER: S-EPMC7181251 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature

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

Gardymova Anna P AP Krakhalev Mikhail N MN Zyryanov Victor Ya VY

Molecules (Basel, Switzerland) 20200410 7

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 ≤ 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 ...[more]

PMID: 32290090

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