Тип публикации: статья из журнала
Год издания: 2020
Идентификатор DOI: 10.18083/LCAppl.2020.2.62
Ключевые слова: nematic liquid crystal, polycarbonate, domain structure, light interference, light scattering, magnetic field
Аннотация: The propagation of a laser beam through a layer of a hybrid ordered nematic on a polycarbonate film is studied. The nematic has a surface disclination line consisting of domains with a radial configuration of the nematic director. The orientational structure in the domain volume can be transformed into a planar uniaxial structure dПоказать полностьюefined by a disclination line or into a homeotropic one under the influence of a magnetic field. The dependence of the light intensity transmitted through the layer on the magnetic field applied perpendicular to the polymer surface is obtained. Optical transmission was accompanied by interference minima and maxima. Light interference model based on birefringence which takes into account scattering by the orientation-structural inhomogeneities of the domain ensemble is presented. Considering the analysis of the liquid crystal free energy and the birefringence effects, an analytical expression is derived. It establishes the relationship between the light intensity and the magnetic field strength, which coincides with the experiment.
Журнал: LIQUID CRYSTALS AND THEIR APPLICATION
Выпуск журнала: Vol. 20, Is. 2
Номера страниц: 62-68
ISSN журнала: 19913966
Место издания: IVANOVO
Издатель: IVANOVO STATE UNIV