In-Plane Operation of Alignment-Controlled Holographic Polymer-Dispersed Liquid Crystal

Abstract

A new mode of operation for an alignment-controlled holographic polymer-dispersed liquid crystal (HPDLC) device has been confirmed experimentally. In this mode, called in-plane operation, an electric field is applied parallel to the substrates. In the alignment-controlled HPDLC device, the polymer layers are formed periodically with aligned LC layers. We confirmed the fundamental operation of this in-plane mode experimentally. The polarization dependence of the reflected light proves that the LC molecules in the LC layers move in-plane. The in-plane operation makes the alignment-controlled HPDLC device polarization free.

Diffraction measurement and analysis of slanted holographic polymer dispersed liquid crystal

“…9,10 The HPDLC devices with a horizontal multilayered structure were studied. 4 Recently many research groups are optimizing and evaluating new materials, exposure times, and preparation procedures [11][12][13][14][15][16] to achieve better reflection or diffraction efficiencies, lower switching voltages, and shorter response times.…”

Alignment Control in Holographic Polymer Dispersed Liquid Crystal.

“…1) 4.2.In-plane mode of reflection type HPDLC [16] Polarization selectivity can be an advantage for some applications.…”

The fabrication of polymer dispersed liquid crystal based on SiO2photonic crystal template

“…The LCs-rich regions are composed of randomly oriented micrometre-/nanometre-sized droplets whose size depends on a number of factors including monomer functionality, film composition, intensity and duration of irradiation, and curing temperature. [7][8][9][10][11][12][13] There has been considerable interest in studying the morphology and electro-optic properties of polymer dispersed liquid crystals (PDLCs) films. [14][15][16][17][18][19][20] In the case of conventional PDLCs films, the driving voltages are high and the response times are lower relative to those of bulk liquid crystal displays.…”