scholarly journals Optical Properties of Electrically Tunable Two-Dimensional Photonic Lattice Structures Formed in a Holographic Polymer-Dispersed Liquid Crystal Film: Analysis and Experiment

Materials ◽  
2014 ◽  
Vol 7 (5) ◽  
pp. 3677-3698 ◽  
Author(s):  
Mayu Miki ◽  
Ryuichiro Ohira ◽  
Yasuo Tomita
Keyword(s):  
Optical Properties ◽  
Liquid Crystal ◽  
Lattice Structures ◽  
Two Dimensional ◽  
Film Analysis ◽  
Polymer Dispersed Liquid Crystal ◽  
Crystal Film ◽  
Polymer Dispersed

scholarly journals Electro-Optical Properties of a Transmissive Diffuser based on Electrically-Tuneable Polymer-Dispersed Liquid Crystal Film

2021 ◽  
Vol 27 (1) ◽  
pp. 8-12
Author(s):  
Hui LI ◽  
Feifan YANG ◽  
Jing PENG ◽  
Fan PAN ◽  
Yuntao WU ◽  
...  
Keyword(s):  
Optical Properties ◽  
Liquid Crystal ◽  
Mixed Reality ◽  
Imaging Features ◽  
Test Results ◽  
Polymer Dispersed Liquid Crystal ◽  
Crystal Film ◽  
Polymer Dispersed ◽  
Application Potential ◽  
Ultraviolet Lamp

A transmissive diffuser that is based on polymer-dispersed liquid crystal (PDLC) film has been developed. Liquid crystal E7 and polymer NOA65, at a ratio of 55:45 by weight, were utilized to fabricate the diffuser. With the use of phase separation, diffuser of 7.5 µm PDLC film thickness can be formed after 20 minutes UV irradiation with an ultraviolet lamp (36E @ 365nm). Test results have shown that the proposed diffuser has good classic electro-optical and transmissive imaging features under an external tuneable electric field. The development has a great application potential in augmented reality or mixed reality-type applications.

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.

scholarly journals Low switching voltage ZnO quantum dots doped polymer-dispersed liquid crystal film

2016 ◽  
Vol 24 (7) ◽  
pp. 7063 ◽  
Author(s):  
Chuan-Chun Hsu ◽  
Yi-Xuan Chen ◽  
Hui-Wen Li ◽  
Jy-shan Hsu
Keyword(s):  
Quantum Dots ◽  
Liquid Crystal ◽  
Switching Voltage ◽  
Polymer Dispersed Liquid Crystal ◽  
Crystal Film ◽  
Polymer Dispersed ◽  
Zno Quantum Dots ◽  
Doped Polymer
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