Model of liquid crystal alignment by exposure to linearly polarized ultraviolet light.

Mechanism of Unidirectional Liquid-Crystal Alignment on Polyimides with Linearly Polarized Ultraviolet Light Exposure

Radially and Azimuthally Oriented Liquid Crystal Alignment Patterns Fabricated By Linearly Polarized Ultraviolet Exposure Process

Alignment of Liquid Crystals on Polyimide Films Exposed To Ultraviolet Light

The influence of unpolarized and linearly polarized UV exposure on previously rubbed as well untreated thin polyimide ͑PI͒ alignment layers was studied. Optical retardation and surface morphology measurements were carried out to understand the nature of surface modification as a function of the polarization and the exposure time of the UV light under different surface conditions. The exposure of ...

Photoalignment of liquid crystals by liquid crystals

We observed light-induced alignment of the nematic liquid crystal, 4, 4(')-n-pentylcyanobiphenyl (5CB), on a fused quartz. Irradiation of the adsorbed layer with polarized ultraviolet light produced homogeneous alignment in a 5CB-filled liquid crystal cell with the easy orientation axis perpendicular to the polarization direction. The measured anchoring energy increases with illumination up to ...

Stabilizing blue phase liquid crystals with linearly polarized UV light

Polymer-stabilized blue-phase liquid crystal (PS-BPLC) has become an increasingly important technology trend for information display and photonic applications. BPLC exhibits several attractive features, such as reasonably wide temperature range, submillisecond gray-to-gray response time, no need for alignment layer, optically isotropic voltageoff state, and large cell gap tolerance when an in-p...