Сибирский федеральный университет

Тип публикации: статья из журнала

Год издания: 2022

Идентификатор DOI: 10.3390/polym14071454

Ключевые слова: electric field-induced transformation, metastable state, orientational structure, polymer-dispersed cholesteric liquid crystal, topological defect

Аннотация: Orientational structures of polymer-dispersed cholesteric liquid crystal under homeotropic anchoring and their transformations under the action of an electric field are studied. The switching of cholesteric droplets between different topological states are experimentally and theoretically demonstrated. Structures with λ+1/2-disclination are found and considered. These structures are formed during the transformation of a twisted toroidal configuration induced by a decrease in the electric field when a relative chiral parameter N0 > 6.3. The transformation of the initial structure with a bipolar distribution of the helix axis into a twisted toroidal configuration and then into a structure with λ+1/2-disclination is investigated in detail. The behavior of these structures under the influence of an external electric field, as well as the appearance of structures with λ−1/2-disclination, are studied. Obtained results are promising for the development of optical materials with programmable properties. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.

Журнал: Polymers

Выпуск журнала: Vol. 14, Is. 7

Номера страниц: 1454

ISSN журнала: 20734360

Издатель: MDPI

• Gardymova A.P. (Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation, Institute of Engineering Physics and Radio Electronics, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation)
• Krakhalev M.N. (Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation, Institute of Engineering Physics and Radio Electronics, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation)
• Rudyak V.Yu. (Faculty of Physics, Lomonosov Moscow State University, Moscow, 119991, Russian Federation)
• Barbashov V.A. (Lebedev Physical Institute of the Russian Academy of Sciences, Moscow, 119991, Russian Federation)
• Zyryanov V.Ya. (Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation)

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