Spatial light modulator using polymer‐dispersed liquid crystal: Dependence of resolution on reading light intensity

1994 ◽  
Vol 75 (6) ◽  
pp. 3158-3168 ◽  
Author(s):  
Kuniharu Takizawa ◽  
Hiroshi Kikuchi ◽  
Hideo Fujikake ◽  
Kenichi Kodama ◽  
Kiyoshi Kishi
Keyword(s):  
Liquid Crystal ◽  
Light Intensity ◽  
Spatial Light Modulator ◽  
Light Modulator ◽  
Polymer Dispersed Liquid Crystal ◽  
Polymer Dispersed

Grayscale-Memory Spatial Light Modulator with Polymer-Dispersed Phase-Transition Liquid Crystal

1996 ◽  
Vol 3 (2) ◽  
pp. 89-95
Author(s):  
Hideo Fujikake ◽  
Kuniharu Takizawa ◽  
Hiroshi Kikuchi ◽  
Takanori Fujii ◽  
Masahiro Kawakita ◽  
...  
Keyword(s):  
Phase Transition ◽  
Liquid Crystal ◽  
Spatial Light Modulator ◽  
Dispersed Phase ◽  
Light Modulator ◽  
Polymer Dispersed

scholarly journals Holographic Characteristics of Photopolymers Containing Different Mixtures of Nematic Liquid Crystals

Polymers ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 325 ◽  
Author(s):  
Sandra Fenoll ◽  
Francisco Brocal ◽  
José David Segura ◽  
Manuel Ortuño ◽  
Augusto Beléndez ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystals ◽  
Light Intensity ◽  
Electric Field ◽  
Diffraction Efficiency ◽  
Applied Voltage ◽  
Nematic Liquid Crystals ◽  
Variable Electric Field ◽  
Polymer Dispersed Liquid Crystal ◽  
Polymer Dispersed

A holographic polymer dispersed liquid crystal (HPDLC) is used to record holographic diffraction gratings. Several mixtures of nematic liquid crystals (LC) are used as components of the HPDLC to evaluate their influence in static and dynamic basic properties. The diffraction efficiency obtained in the reconstruction of the holograms is evaluated to compare the influence of the different LC. Additionally, the samples are exposed to a variable electric field and the diffracted light intensity as a function of the applied voltage is measured to evaluate the influence of the LC. The results obtained show significant differences depending on the LC incorporated to the photopolymer.

scholarly journals Concentric polymer-dispersed liquid crystal rings for light intensity modulation

2011 ◽  
Vol 169 (2) ◽  
pp. 341-346 ◽  
Author(s):  
Tsung-Chun Hsu ◽  
Ching-Heng Lu ◽  
Yu-Ting Huang ◽  
Wen-Pin Shih ◽  
Wen-Shiang Chen
Keyword(s):  
Liquid Crystal ◽  
Light Intensity ◽  
Intensity Modulation ◽  
Polymer Dispersed Liquid Crystal ◽  
Polymer Dispersed

scholarly journals Polymer Dispersed Cholesteric Liquid Crystals With a Toroidal Director Configuration under an Electric Field

Polymers ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 732
Author(s):  
Anna P. Gardymova ◽  
Mikhail N. Krakhalev ◽  
Victor Ya. Zyryanov ◽  
Alexandra A. Gruzdenko ◽  
Andrey A. Alekseev ◽  
...  
Keyword(s):  
Optical Properties ◽  
Liquid Crystal ◽  
Electric Field ◽  
Point Defects ◽  
Structural Response ◽  
Optical Filters ◽  
Response Curves ◽  
Polymer Dispersed Liquid Crystal ◽  
Dichroic Dye ◽  
Polymer Dispersed

The electro-optical properties of polymer dispersed liquid crystal (PDLC) films are highly dependent on the features of the contained liquid crystal (LC) droplets. Cholesteric LC droplets with homeotropic boundaries can form several topologically different orientational structures, including ones with single and more point defects, layer-like, and axisymmetric twisted toroidal structures. These structures are very sensitive to an applied electric field. In this work, we have demonstrated experimentally and by computer simulations that twisted toroidal droplets reveal strong structural response to the electric field. In turn, this leads to vivid changes in the optical texture in crossed polarizers. The response of droplets of different sizes were found to be equivalent in terms of dimensionless parameters. In addition, the explanation of this phenomenon showed a comparison of theoretical and experimental structural response curves aids to determine the shape of the droplet. Finally, we demonstrated that the addition of a dichroic dye allows such films to be used as optical filters with adjustable color even without polarizers.

Sign in / Sign up

Export Citation Format

Share Document