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Orientational transition in the cholesteric layer induced by electrically controlled ionic modification of the surface anchoring : научное издание

Описание

Тип публикации: статья из журнала

Год издания: 2017

Идентификатор DOI: 10.1080/02678292.2016.1218557

Ключевые слова: Cholesteric, ionic surfactant, anchoring transition, twisted hybrid structure, electrooptics

Аннотация: A reorientation of cholesteric liquid crystal with a large helix pitch induced by the electrically controlled ionic modification of the surface anchoring has been studied. In initial state, the cholesteric helix is untwisted completely owing to the normal surface anchoring specified by the cations adsorbed at the substrates. As a rПоказать полностьюesult, the homeotropic director configuration is observed within the cell. Under the action of DC electric field, one of the substrates becomes free from the layer of surface active cations, therefore, setting the planar surface anchoring. The latter, in turn, leads to the formation of the hybrid chiral structure. The threshold value and dynamic parameters have been estimated for this process as well as the range of control voltages, which do not allow the electrohydrodynamic instabilities. The twisted hybrid director configuration observed in the experiment has been analysed by means of the simulation of polarisation change of light propagating through the cholesteric layer with asymmetric (planar and homeotropic) surface anchoring on the cell substrates.%GRAPHICS]

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Издание

Журнал: LIQUID CRYSTALS

Выпуск журнала: Vol. 44, Is. 3

Номера страниц: 484-489

ISSN журнала: 02678292

Место издания: ABINGDON

Издатель: TAYLOR & FRANCIS LTD

Персоны

  • Sutormin Vitaly Sergeevich (Russian Acad Sci, Kirensky Inst Phys, Siberian Branch, Krasnoyarsk Sci Ctr, Krasnoyarsk 660036, Russia)
  • Timofeev Ivan Vladimirovich (Russian Acad Sci, Kirensky Inst Phys, Siberian Branch, Krasnoyarsk Sci Ctr, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk, Russia)
  • Krakhalev Mikhail Nikolaevich (Russian Acad Sci, Kirensky Inst Phys, Siberian Branch, Krasnoyarsk Sci Ctr, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk, Russia)
  • Prishchepa Oxana Olegovna (Russian Acad Sci, Kirensky Inst Phys, Siberian Branch, Krasnoyarsk Sci Ctr, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk, Russia)
  • Zyryanov Victor Yakovlevich (Russian Acad Sci, Kirensky Inst Phys, Siberian Branch, Krasnoyarsk Sci Ctr, Krasnoyarsk 660036, Russia)

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