scholarly journals Effect of Sectional Polymerization Process on Tunable Twist Structure Liquid Crystal Filters

Crystals ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 268
Author(s):  
Changli Sun ◽  
Jiangang Lu
Keyword(s):  
Liquid Crystal ◽  
Cholesteric Liquid Crystal ◽  
Wide Band ◽  
Polymerization Process ◽  
Central Wavelength ◽  
Hyper Spectral ◽  
Phase Liquid ◽  
Blue Phase ◽  
Polymer Stabilized ◽  
Color Filters

The effect of sectional polymerization process on tunable filters with cholesteric liquid crystal (CLC) and blue phase liquid crystal (BPLC) is demonstrated. The bandwidths of the polymer-stabilized cholesteric liquid crystal (PSCLC) and polymer-stabilized blue phase liquid crystal (PSBPLC) filters can be broadened by the holding treatment without distortion. The reflection bandwidth of the CLC filter can be broadened from 120 nm to 220 nm, and that of the BPLC filter can be broadened from 45 nm to 140 nm. Meanwhile, the intensity of reflection can be retained very well. The central wavelength of polymer-stabilized CLC filter can be thermally tuned from 1614 nm to 1460 nm with a stable wide bandwidth. The tunable C-band CLC filter and BPLC filter show great potential application in multi- and hyper-spectral systems and wide-band color filters.

Electrically Switched Liquid Crystal Color and Device Applications

2010 ◽  
Vol 428-429 ◽  
pp. 24-28
Author(s):  
Shin Ying Lu ◽  
Liang Chy Chien
Keyword(s):  
Liquid Crystal ◽  
Incident Light ◽  
Cholesteric Liquid Crystal ◽  
Blue Shift ◽  
Additive Formulation ◽  
Device Applications ◽  
Blue Phase ◽  
Different Color ◽  
Polymer Stabilized ◽  
Color Filters

We demonstrate a polymer-stabilized cholesteric liquid crystal (PSChLC) where the reflected color can be electrically-switched to reflect a different color at a shorter wavelength (blue-shift). A polymerizable additive formulation is used to ensure a wider range of color tuning and anisotropic reflection where on side reflects and the other side transmits the incident light in response to applied voltage. A second electrically switched color based on polymer-stabilized blue phase (PSBP) liquid crystal is also demonstrated. Applying an electric field across the cell results in a red-shift in Bragg reflected wavelength due to the electrostriction effect. These switchable color devices of are color filters and polarizers free which are suitable for electronic papers.

scholarly journals Multi-Wavelength Filters of Templated Blue Phase Liquid Crystal

Crystals ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 451 ◽  
Author(s):  
Shenghao Zha ◽  
Hongzhou Zhang ◽  
Changli Sun ◽  
Yifan Feng ◽  
Jiangang Lu
Keyword(s):  
Liquid Crystal ◽  
Incident Angle ◽  
Incident Light ◽  
Cholesteric Liquid Crystal ◽  
Temperature Shift ◽  
Central Wavelength ◽  
Multi Wavelength ◽  
Phase Liquid ◽  
Blue Phase ◽  
Wavelength Filters

The multi-wavelength filters in the visible light band using the blue phase liquid crystal (BPLC) template was investigated. A multi-layer templated BPLC (T-BPLC) filter without intermediate dielectric layers was fabricated, which may reflect multi-wavelength in one filter. Compared with the cholesteric liquid crystal (CLC) filter, the T-BPLC filter may get a much narrower reflection bandwidth (<15 nm), show better angular stability of incident light, and have a more stable wavelength and bandwidth with a temperature shift. Furthermore, the central wavelength and bandwidth can be easily controlled by the fabrication process and the optimization of the material concentration. When the incident angle varies, the shift of the center wavelength of the T-BPLC filter is much smaller than that of the CLC filter. The multi-wavelength filter shows a potential application in color filters and high-density wavelength division multiplexed networks.

P-205: Late-News Poster: Augmented Reality Display Based on Polymer-Stabilized Blue Phase Liquid Crystal Combiner

2018 ◽  
Vol 49 (1) ◽  
pp. 1758-1761
Author(s):  
Quanming Chen ◽  
Yan Li ◽  
Shuxin Liu ◽  
Pengcheng Zhou ◽  
Sida Li ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Augmented Reality ◽  
Phase Liquid ◽  
Blue Phase ◽  
Late News ◽  
Polymer Stabilized

Polymer-stabilized blue phase liquid crystal display with slanted wall-shaped electrodes

2012 ◽  
Vol 10 (2) ◽  
pp. 022301-22303 ◽  
Author(s):  
Feng Zhou Feng Zhou ◽  
Qionghua Wang Qionghua Wang ◽  
Di Wu Di Wu ◽  
Jianpeng Cui Jianpeng Cui
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystal Display ◽  
Phase Liquid ◽  
Blue Phase ◽  
Polymer Stabilized

Polymer-stabilized blue phase liquid crystal of large Kerr constant based on multiple dopants

2015 ◽  
Vol 30 (4) ◽  
pp. 576-580 ◽  
Author(s):  
李伟欢 LI Wei-huan ◽  
孙骁扬 SUN Xiao-yang ◽  
李泳锐 LEE Yung-jui ◽  
罗长诚 LO Chang-cheng ◽  
连水池 Lien Alan ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Kerr Constant ◽  
Phase Liquid ◽  
Blue Phase ◽  
Polymer Stabilized

17.1:Invited Paper: Polymer-Stabilized Blue Phase Liquid Crystal Displays Applying Novel Groove Cell Structure

2013 ◽  
Vol 44 (1) ◽  
pp. 182-183 ◽  
Author(s):  
Cheng-Yeh Tsai ◽  
Te-Jen Tseng ◽  
Lin-Yung Wang ◽  
Fang-Cheng Yu ◽  
Yi-Fen Lan ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Cell Structure ◽  
Liquid Crystal Displays ◽  
Phase Liquid ◽  
Blue Phase ◽  
Polymer Stabilized

scholarly journals Fast Switchable Dual-Model Grating by Using Polymer-Stabilized Sphere Phase Liquid Crystal

Polymers ◽  
2018 ◽  
Vol 10 (8) ◽  
pp. 884 ◽  
Author(s):  
Xuan Li ◽  
Xiaowei Du ◽  
Peiyun Guo ◽  
Jiliang Zhu ◽  
Wenjiang Ye ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Response Time ◽  
Potential Application ◽  
Diffractive Optics ◽  
Dual Model ◽  
Phase Liquid ◽  
Blue Phase ◽  
Polymer Stabilized ◽  
Polarization Independent ◽  
Great Potential Application

We demonstrated a fast switchable dual-model grating based on a polymer-stabilized sphere phase liquid crystal. To form binary periodicity layers, the polymer-stabilized sphere phase liquid crystal precursor was sequence ultraviolet cured at an isotropic and sphere phase. This grating jointly modulated both the phase and the amplitude, had six times the diffraction efficiency of that fabricated with polymer-stabilized blue phase liquid crystal. Moreover, the dual-model tunable grating shown polarization-independent and submillisecond response time, which may hold a great potential application in diffractive optics.

P-3.2: Augmented Reality Display Based on Polymer-Stabilized Blue Phase Liquid Crystal Combiner

2018 ◽  
Vol 49 ◽  
pp. 572-575 ◽  
Author(s):  
Quanming Chen ◽  
Yan Li ◽  
Shuxin Liu ◽  
Pengcheng Zhou ◽  
Sida Li ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Augmented Reality ◽  
Phase Liquid ◽  
Blue Phase ◽  
Polymer Stabilized
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