Recent advances in fast-switching liquid-crystal mode based on uniform lying helix (ULH) (Conference Presentation)

2017 ◽  
Author(s):  
Michael Wittek ◽  
Simon Siemianowski ◽  
Bernd Fiebranz ◽  
Melanie Klasen-Memmer
Keyword(s):  
Liquid Crystal ◽  
Fast Switching ◽  
Recent Advances

scholarly journals Holographic Polymer-Dispersed Liquid Crystals: Materials, Formation, and Applications

2008 ◽  
Vol 2008 ◽  
pp. 1-52 ◽  
Author(s):  
Y. J. Liu ◽  
X. W. Sun
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystals ◽  
Refractive Index Profile ◽  
Single Step ◽  
Fast Switching ◽  
Polymer Dispersed Liquid Crystal ◽  
Current State ◽  
Index Matching ◽  
Polymer Dispersed ◽  
Materials Used

By combining polymer-dispersed liquid crystal (PDLC) and holography, holographic PDLC (H-PDLC) has emerged as a new composite material for switchable or tunable optical devices. Generally, H-PDLC structures are created in a liquid crystal cell filled with polymer-dispersed liquid crystal materials by recording the interference pattern generated by two or more coherent laser beams which is a fast and single-step fabrication. With a relatively ideal phase separation between liquid crystals and polymers, periodic refractive index profile is formed in the cell and thus light can be diffracted. Under a suitable electric field, the light diffraction behavior disappears due to the index matching between liquid crystals and polymers. H-PDLCs show a fast switching time due to the small size of the liquid crystal droplets. So far, H-PDLCs have been applied in many promising applications in photonics, such as flat panel displays, switchable gratings, switchable lasers, switchable microlenses, and switchable photonic crystals. In this paper, we review the current state-of-the-art of H-PDLCs including the materials used to date, the grating formation dynamics and simulations, the optimization of electro-optical properties, the photonic applications, and the issues existed in H-PDLCs.

Chiral-induced self-assembly sphere phase liquid crystal with fast switching time

2014 ◽  
Vol 104 (9) ◽  
pp. 091116 ◽  
Author(s):  
Ji-Liang Zhu ◽  
Shui-Bin Ni ◽  
Chao Ping Chen ◽  
Dong-Qing Wu ◽  
Xiao-Long Song ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Self Assembly ◽  
Switching Time ◽  
Fast Switching ◽  
Phase Liquid

40‐1: Invited Paper: Fast‐Switching Liquid Crystal Devices for Near‐Eye and Head‐Up Displays

2020 ◽  
Vol 51 (1) ◽  
pp. 567-570
Author(s):  
Tao Zhan ◽  
Jianghao Xiong ◽  
Guanjun Tan ◽  
Shin-Tson Wu
Keyword(s):  
Liquid Crystal ◽  
Fast Switching ◽  
Liquid Crystal Devices

Fast switching polyimide-less liquid crystal device based on hydrogen bonding of bifunctional reactive amphiphiles

2019 ◽  
Vol 678 (1) ◽  
pp. 98-105
Author(s):  
Intae Son ◽  
Chi Hyeong Cho ◽  
Gitae Moon ◽  
Chunho Kim ◽  
Eunbi Lee ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Liquid Crystal ◽  
Liquid Crystal Device ◽  
Fast Switching

Ferroelektrische Flüssigkristall - Mischungen mit Kohlenhydrat - Derivaten als Dotierstoffe / Ferroelectric Liquid Crystal Mixtures with Carbohydrate Derivates as Dopants

1989 ◽  
Vol 44 (7) ◽  
pp. 675-679 ◽  
Author(s):  
V. Vill ◽  
F. Fischer ◽  
J. Thiem
Keyword(s):  
Liquid Crystal ◽  
Chiral Center ◽  
Ferroelectric Liquid Crystal ◽  
Fast Switching ◽  
Switching Times ◽  
Smectic Phases ◽  
First Time ◽  
Helical Twisting Power

Abstract For the first time carbohydrate derivatives were studied as dopants for calamitic smectic phases. Fast switching ferroelectric cells could be realized, and electroclinic effects were observed. By inversion of configuration at a chiral center of these compounds switching times, solubility, and helical twisting power vary by orders of magnitude. The studied derivatives showed modest solubility properties.

Dynamic Mechanism of Fast Switching in Light Valve Using Liquid Crystal

1985 ◽  
Vol 24 (Part 1, No. 8) ◽  
pp. 905-908 ◽  
Author(s):  
Akihiko Sugimura ◽  
Takao Kawamura
Keyword(s):  
Liquid Crystal ◽  
Dynamic Mechanism ◽  
Fast Switching ◽  
Light Valve
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