Тип публикации: статья из журнала
Год издания: 2021
Идентификатор DOI: 10.3390/polym13172993
Ключевые слова: conical anchoring, polymethacrylate, nematic liquid crystal, orientational structure, director tilt angle, domain wall, electrically-induced reorientation
Аннотация: Dependence of the director tilt angle of nematic liquid crystal (LC) under conical anchoring from the two-component polymer mixture composition has been studied. We varied the ratio of poly(isobutyl methacrylate) (PiBMA), which specifies a conical anchoring for the nematic liquid crystal LN-396, and poly(methylmethacrylate) (PMMA) Показать полностьюassigning a tangential alignment for the same nematic. An oblique incidence light technique to determine a tilt angle has been used. It has been shown that the tilt angle increases from 0 degrees to 47.7 degrees when PiBMA:PMMA ratio changes in the range 30:70 to 100:0. The specific optical textures viewed under the polarizing microscope and proper orientational structures have been considered for various compositions of the polymer films. An electric field action on the formed orientational structures has been investigated. The obtained results are promising for the application in various electro-optical LC devices with a conical anchoring in which the director tilt angle is a crucial parameter: a controlled diffraction gratings, an electrically operated achromatic rotators of linear light polarization, etc.
Журнал: POLYMERS
Выпуск журнала: Vol. 13, Is. 17
Номера страниц: 2993
ISSN журнала: 20734360
Место издания: BASEL
Издатель: MDPI