Controlled diffraction liquid-crystal structures with a photoalignment polymer

Abstract

The characteristics of electric-field-controlled diffraction elements based on a nematic liquid crystal and a new photoalignment polymer have been studied. The photocross-linking of this polymer allows periodic oriented structures and liquid crystal phase gratings with a 30% diffraction efficiency in the first order to be formed.

Temporal Characteristics of Liquid Crystal Cell with WS2 Nanoparticles: Mesophase Sensitization and Relief Features

“…Учитываются условия на границе раздела слоев в сложной конструкции ЖК-ячейки, условия питания и облучения ЖК-мезофазы, способы ориентирования ЖК-молекул, а также модификация мезофазы разного рода частицами, как то: фуллеренами, квантовыми точками, шунгитами, оксидами графена, J-агрегатами, др. [10][11][12][13][14][15][16][17][18][19][20][21][22][23]. Вполне понятно, что как процесс сенсибилизации ЖК, так и граничные условия существенно влияют на физические свойства ЖК, в том числе на временны́е параметры устройств на их основе, характеризующие реакцию и релаксацию мезофазы.…”

Paper No 16.2: New Process for Patterned Retarder Fabrication

“…Previously we have shown that well‐shaped micrograting can be formed in LC‐cells with photoalignment B‐15 layers . Thus, we attempted to construct a patterned RMM retarder using photoalignment technique preparing aligning layer by our photopolymers subjecting to polarized light of different polarization directions.…”

Optical switch based on the electrically controlled liquid crystal interface

“…With such a scheme, transmission of the LC cell is, as a rule, electrically controlled. New possibilities are associated with diffraction of radiation from the spatially modulated LC structures [4][5][6][7] and also with the use of LC cells for the transformation of linearly polarized light beams into beams with radial or azimuthal polarizations and for the generation of optical vortices [8].…”