Characterization of submillisecond response optical addressing phase modulator based on low light scattering polymer network liquid crystal

2015 ◽  
Vol 117 (1) ◽  
pp. 014501 ◽  
Author(s):  
Zhao Xiangjie ◽  
Liu Cangli ◽  
Duan Jiazhu ◽  
Zhang Dayong ◽  
Luo Yongquan
Keyword(s):  
Liquid Crystal ◽  
Light Scattering ◽  
Polymer Network ◽  
Phase Modulator ◽  
Low Light

scholarly journals Morphology effect on the light scattering and dynamic response of polymer network liquid crystal phase modulator

2014 ◽  
Vol 22 (12) ◽  
pp. 14757 ◽  
Author(s):  
Zhao Xiangjie ◽  
Liu Cangli ◽  
Duan Jiazhu ◽  
Zeng Jiancheng ◽  
Zhang Dayong ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Light Scattering ◽  
Dynamic Response ◽  
Polymer Network ◽  
Crystal Phase ◽  
Phase Modulator ◽  
Liquid Crystal Phase ◽  
Morphology Effect ◽  
Liquid Crystal Phase Modulator

Fast Response Phase Modulator in Infrared Waveband Based on Polymer Network Liquid Crystal

2014 ◽  
Vol 34 (6) ◽  
pp. 0623001
Author(s):  
赵祥杰 Zhao Xiangjie ◽  
刘仓理 Liu Cangli ◽  
曾建成 Zeng Jiancheng ◽  
张大勇 Zhang Dayong ◽  
骆永全 Luo Yongquan
Keyword(s):  
Liquid Crystal ◽  
Polymer Network ◽  
Fast Response ◽  
Phase Modulator ◽  
Response Phase

scholarly journals Submillisecond-Response Polymer Network Liquid Crystal Phase Modulators

Polymers ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 2862
Author(s):  
Yannanqi Li ◽  
Zhiyong Yang ◽  
Ran Chen ◽  
Lingchao Mo ◽  
Juanli Li ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Light Scattering ◽  
Beam Steering ◽  
Polymer Network ◽  
Infrared Region ◽  
Dielectric Anisotropy ◽  
Spatial Light Modulators ◽  
Operating Voltage ◽  
Scattering Loss ◽  
Light Modulators

A submillisecond-response and light scattering-free polymer-network liquid crystal (PNLC) for infrared spatial light modulators is demonstrated. Our new liquid crystal host exhibits a higher birefringence, comparable dielectric anisotropy, and slightly lower visco-elastic constant than a commonly employed commercial material, HTG-135200. Moreover, the electro-optical performance of our PNLCs with different monomer concentrations, cell gaps, and liquid crystal (LC) hosts is compared and discussed from four aspects: operating voltage, hysteresis, relaxation time, and light scattering loss. The temperature effect on hysteresis is also analyzed. Potential applications of PNLCs for laser beam steering and spatial light modulators especially in the infrared region are foreseeable.

scholarly journals Fast-response infrared phase modulator based on polymer network liquid crystal

2015 ◽  
Vol 5 (2) ◽  
pp. 265 ◽  
Author(s):  
Fenglin Peng ◽  
Haiwei Chen ◽  
Suvagata Tripathi ◽  
Robert J. Twieg ◽  
Shin-Tson Wu
Keyword(s):  
Liquid Crystal ◽  
Polymer Network ◽  
Fast Response ◽  
Phase Modulator

DYNAMIC LIGHT SCATTERING IN LC-440 NEMATIC LIQUID CRYSTAL

2014 ◽  
Vol 73 (11) ◽  
pp. 977-983
Author(s):  
A. P. Fedoryako ◽  
A. I. Kocherzhin ◽  
M. P. Kukhtin ◽  
E. I. Chernyakov
Keyword(s):  
Liquid Crystal ◽  
Light Scattering ◽  
Dynamic Light Scattering ◽  
Nematic Liquid Crystal

scholarly journals Azimuthal Anchoring Strength in Photopatterned Alignment of a Nematic

Crystals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 675
Author(s):  
H. Nilanthi Padmini ◽  
Mojtaba Rajabi ◽  
Sergij V. Shiyanovskii ◽  
Oleg D. Lavrentovich
Keyword(s):  
Liquid Crystal ◽  
Point Defects ◽  
Elastic Energy ◽  
Separation Distance ◽  
Thin Layers ◽  
Uv Exposure ◽  
Surface Anchoring ◽  
Anchoring Strength ◽  
Spatially Varying

Spatially-varying director fields have become an important part of research and development in liquid crystals. Characterization of the anchoring strength associated with a spatially-varying director is difficult, since the methods developed for a uniform alignment are seldom applicable. Here we characterize the strength of azimuthal surface anchoring produced by the photoalignment technique based on plasmonic metamsaks. The measurements used photopatterned arrays of topological point defects of strength +1 and −1 in thin layers of a nematic liquid crystal. The integer-strength defects split into pairs of half-integer defects with lower elastic energy. The separation distance between the split pair is limited by the azimuthal surface anchoring, which allows one to determine the strength of the latter. The strength of the azimuthal anchoring is proportional to the UV exposure time during the photoalignment of the azobenzene layer.

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