A mean field theory is presented to describe cholesteric phases in mixtures of a polymer and a cholesteric liquid crystal. Taking into account an anisotropic coupling between a polymer and a liquid crystal, we examine the helical pitch, twist elastic constant, and phase separations. Analytical expressions of the helical pitch of a cholesteric phase and the twist elastic constant are derived as ...

Polymer-dispersed liquid crystal automated quantification system for vision through polymer-dispersed double-glazed windows: Circuit implementation (PDLC)-windows played an essential role in providing a visual comfort occupants commercial buildings recently. PDLC windows adjust the visible transparency of glazing to control daylight accessed internal environments. A former study proposed algori...

The formation of different structures in phase-separated composite films (PSCOFs) from formulations of liquid crystals and photocurable monomers has been investigated using polarizing optical and scanning electron microscopies. Two processes, spatially nonuniform polymerization and diffusion of small molecules, play important roles in determining a specific PSCOF polymer structure. The variatio...

Articles you may be interested in Dynamic response of a polymer-stabilized blue-phase liquid crystal Electro-optics of polymer-stabilized blue phase liquid crystal displays Appl. Reversible optical control of transmittance in polymer/liquid crystal composite films by photoinduced phase transition J. Polymer-stabilized blue-phase liquid crystal (BPLC) comprising fluorinated compounds with high r...

We have proposed composite films composed of a molecular-aligned polymer and liquid crystal (LC) for substrate-free liquid crystal displays with high-contrast images. We successfully controlled the molecular alignment of the LC and formed molecular-aligned LC droplets in the polymer by controlling the fluidity of the LC/monomer mixture and the curing rate of the monomer. key words: substrate-fr...

Using deuteron nuclear magnetic resonance (NMR) and dynamic light scattering, we study the orientational order and dynamics of a BL038-5CB liquid-crystal mixture in a holographic polymer dispersed liquid-crystal material (HPDLC) as used for switchable diffractive optical elements. At high temperatures, where the liquid crystal is predominantly in the isotropic phase, the HPDLC deuteron NMR line...