Work

Electrically Controlled Structures in Cholesteric Droplets with Planar Anchoring

Year: 2025

Type: article

Abstract: Structure transformations in cholesteric droplets with planar anchoring induced by an electric field are studied experimentally. The radial spherical structure is formed initially, then it transforms into the quasi-nematic untwisting state under the action of an electric field E=1.75 V/μm. The dependence of structure transformations on the voltage switching-off mode is examined. At the one-step voltage-off mode, the Lyre structure is realized in cholesteric droplets at the relative chiral parameter in the range 4.3≤N≤8.5. The axis-symmetric bipolar structure and the low-symmetric planar bipolar structure are obtained at the multi-step voltage-off mode. The possibility of forming such structures and their stability are determined by the type of voltage switching-off mode, the N value, the surface anchoring strength (the value of cholesteric helix pitch), and the presence of the surface point defects.

Source: Molecules

DOI: 10.3390/molecules30224482

Authors: Oxana O. Prishchepa, Mikhail N. Krakhalev, Anna P. Gardymova

Institutions: Krasnoyarsk Scientific Center, Institute of Physics, Siberian Branch of the Russian Academy of Sciences, Siberian Federal University

Language: English

Topic: Liquid Crystal Research Advancements

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $3,258

Funder: Russian Science Foundation