scholarly journals Acrylate-assisted fractal nanostructured polymer dispersed liquid crystal droplet based vibrant colored smart-windows

RSC Advances ◽  
2019 ◽  
Vol 9 (22) ◽  
pp. 12645-12655 ◽  
Author(s):  
Sunil Kumar ◽  
Hyeryeon Hong ◽  
Woosuk Choi ◽  
Imtisal Akhtar ◽  
Malik Abdul Rehman ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystals ◽  
Smart Windows ◽  
Polymer Dispersed Liquid Crystal ◽  
Liquid Crystal Droplet ◽  
Nanostructured Polymer ◽  
Polymer Dispersed Liquid Crystals ◽  
Polymer Dispersed

Vibrant colored smart-windows were fabricated based on acrylate-assisted fractal nanostructured polymer dispersed liquid crystals.

Viewing Angle Measurement of Polymer-Dispersed Liquid Crystal

2011 ◽  
Vol 181-182 ◽  
pp. 79-82
Author(s):  
Xing Fang Jiang ◽  
Shu Xin Wu
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystals ◽  
Angle Measurement ◽  
Driving Voltage ◽  
Viewing Angle ◽  
Liquid Crystal Device ◽  
Polymer Dispersed Liquid Crystal ◽  
Polymer Dispersed Liquid Crystals ◽  
Voltage Dependent ◽  
Polymer Dispersed

Polymer-dispersed liquid crystals are one kind of important devices. With a He-Ne laser and a photoelectric detector, we measured the driving-voltage dependent and viewing-angle dependent transmission for a polymer-dispersed liquid crystal device. Our results showed that the polymer-dispersed liquid crystal device worked at the driving voltage of 4 V and the effective viewing angle of about 65 degree.

scholarly journals Reverse Mode Polymer Dispersed Liquid Crystal-based Smart Windows: A Progress Report

2021 ◽  
Vol 03 (04) ◽  
pp. 1-1
Author(s):  
Yang Zhang ◽  
◽  
Jiawen Chen ◽  
Xiaowen Hu ◽  
Wei Zhao ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystals ◽  
Material Design ◽  
Smart Window ◽  
Smart Windows ◽  
Polymer Dispersed Liquid Crystal ◽  
Reverse Mode ◽  
Polymer Dispersed ◽  
Recent Developments ◽  
Polymer Stabilized

The reverse mode polymer dispersed liquid crystal (PDLC) is an emerging smart window technology. Unlike traditional PDLCs, a reverse mode PDLC can be transparent and opaque in the absence and presence of an external electric field. This report provides a brief introduction to several reverse modes PDLC smart window technologies, focusing on polymer-stabilized liquid crystals (PSLCs). The systems based on electrohydrodynamic instability (EHDI) of liquid crystals have also been discussed. The working principles, mode of material design, and recent developments are presented for each technology. The current obstacles have also been pointed out. The prospects of smart windows have also been presented.

scholarly journals A novel light diffuser based on the combined morphology of polymer networks and polymer balls in a polymer dispersed liquid crystals film

RSC Advances ◽  
2018 ◽  
Vol 8 (39) ◽  
pp. 21690-21698 ◽  
Author(s):  
Le Zhou ◽  
Haipeng Ma ◽  
Cheng Han ◽  
Wei Hu ◽  
Shuaifeng Zhang ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystals ◽  
Polymer Networks ◽  
Polymer Dispersed Liquid Crystal ◽  
Crystal Film ◽  
Polymer Dispersed Liquid Crystals ◽  
Polymer Dispersed ◽  
Light Diffuser

A novel light diffuser based on a thermally cured polymer dispersed liquid crystal film was made by thermally curing epoxy monomers with thiols and polyamine in a solution of monomers and liquid crystals between two transparent polyethylene terephthalates.

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.

Thermal and cost assessment of various polymer-dispersed liquid crystal film smart windows for energy efficient buildings

2020 ◽  
Vol 263 ◽  
pp. 120155
Author(s):  
Saboor Shaik ◽  
Kirankumar Gorantla ◽  
Venkata Ramana M. ◽  
Shantiswaroop Mishra ◽  
Kishor S. Kulkarni
Keyword(s):  
Liquid Crystal ◽  
Energy Efficient ◽  
Cost Assessment ◽  
Smart Windows ◽  
Polymer Dispersed Liquid Crystal ◽  
Energy Efficient Buildings ◽  
Crystal Film ◽  
Polymer Dispersed

Holographic Polymer Dispersed Liquid Crystals: Effect of Partial Matrix Fluorination on Electro-Optical and Morphological Properties

2001 ◽  
Vol 709 ◽  
Author(s):  
Michael D. Schulte ◽  
Stephen J. Clarson ◽  
Lalgudi V. Natarajan ◽  
C. Allan Guymon ◽  
Timothy J. Bunning
Keyword(s):  
Liquid Crystal ◽  
Low Voltage ◽  
Morphological Properties ◽  
Acrylate Monomer ◽  
Polymer Dispersed Liquid Crystal ◽  
Morphological Studies ◽  
Polymer Dispersed Liquid Crystals ◽  
The Matrix ◽  
Polymer Dispersed ◽  
Morphological Differences

ABSTRACTHolographic polymer dispersed liquid crystal (H-PDLC) films with partially fluorinated matrices were investigated. Electro-optical and morphological studies revealed that fluorinated composites were substantially different from non-fluorinated analogues. The addition of a fluorinated monofunctional acrylate monomer to a pentaacrylate-derived polymer matrix resulted in improved diffraction efficiency. These findings suggest that the partial fluorination of the host polymer decreases the compatibility between the matrix and liquid crystal phase. Morphological differences between fluorinated films and non-fluorinated control specimens were verified using low-voltage, high-resolution scanning electron microscopy (LVHRSEM).

Side-chain liquid-crystal epoxy polymer binders for polymer-dispersed liquid crystals

1992 ◽  
Vol 25 (1) ◽  
pp. 133-137 ◽  
Author(s):  
Liang Chy Chien ◽  
C. Lin ◽  
David S. Fredley ◽  
James W. McCargar
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystals ◽  
Epoxy Polymer ◽  
Side Chain ◽  
Polymer Binders ◽  
Polymer Dispersed Liquid Crystals ◽  
Polymer Dispersed
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