Solvent effect on phase transition of lyotropic rigid-chain liquid crystal polymer studied by dissipative particle dynamics

2013 ◽  
Vol 138 (2) ◽  
pp. 024910 ◽  
Author(s):  
Tongyang Zhao ◽  
Xiaogong Wang
Keyword(s):  
Phase Transition ◽  
Liquid Crystal ◽  
Solvent Effect ◽  
Dissipative Particle Dynamics ◽  
Particle Dynamics ◽  
Liquid Crystal Polymer ◽  
Rigid Chain ◽  
Crystal Polymer

scholarly journals Photochemical On–Off Switching of One-Dimensional Photonic Crystals Consisting of Azo-Functionalized Liquid Crystal Polymer and Polyvinyl Alcohol

Crystals ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 610 ◽  
Author(s):  
Sunnam Kim ◽  
Seiji Kurihara
Keyword(s):  
Phase Transition ◽  
Refractive Index ◽  
Liquid Crystal ◽  
Photonic Crystals ◽  
Polyvinyl Alcohol ◽  
Refractive Index Change ◽  
Liquid Crystal Polymer ◽  
Index Change ◽  
One Dimensional ◽  
Crystal Polymer

One-dimensional (1D) photonic crystals (PCs) are prepared from multi-bilayered films stacked with alternating azo-functionalized liquid crystal polymer (PAz) films and polyvinyl alcohol (PVA) films. Reflection with a wavelength that depends on the thickness of the films is observed, and the reflection can be turned on and off by switching between the two states, based on whether there is a difference in the refractive index between the two films. The refractive index change of PAz can be photochemically caused by a phase transition, based on the alignment states of the liquid crystal (LC). In this review, we focused on an effective photo-induced on–off switching approach in 1D PCs using LC properties and described the basic optical and chemical principles, the experimental results, and further optimizations.

Fabrication of slanted liquid crystal/polymer volume grating applied to augmented reality

2020 ◽  
Vol 35 (10) ◽  
pp. 1012-1018
Author(s):  
Ming-huan LIU ◽  
◽  
Xiu-hua FU ◽  
Fei WANG ◽  
Jian TANG ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Augmented Reality ◽  
Liquid Crystal Polymer ◽  
Crystal Polymer ◽  
Polymer Volume

An electrically light-transmittance-switchable film with a low driving voltage based on liquid crystal/polymer composites

2019 ◽  
Vol 47 (1) ◽  
pp. 106-113 ◽  
Author(s):  
Chunxin Li ◽  
Mei Chen ◽  
Lanying Zhang ◽  
Wenbo Shen ◽  
Xiao Liang ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Polymer Composites ◽  
Liquid Crystal Polymer ◽  
Light Transmittance ◽  
Driving Voltage ◽  
Crystal Polymer

A compact low frequency dual band liquid crystal polymer antenna for VHF and UHF band applications

2021 ◽  
Vol 42 ◽  
pp. 1356-1360
Author(s):  
Gandu Srilekha ◽  
P. Pardhasaradhi ◽  
B.T.P. Madhav ◽  
M. VenkateswaraRao ◽  
M.C. Rao
Keyword(s):  
Liquid Crystal ◽  
Low Frequency ◽  
Liquid Crystal Polymer ◽  
Dual Band ◽  
Crystal Polymer ◽  
Uhf Band

scholarly journals Enhancing the Optical Efficiency of Near-Eye Displays with Liquid Crystal Optics

Crystals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 107
Author(s):  
Tao Zhan ◽  
En-Lin Hsiang ◽  
Kun Li ◽  
Shin-Tson Wu
Keyword(s):  
Virtual Reality ◽  
Liquid Crystal ◽  
High Efficiency ◽  
Berry Phase ◽  
Optical Element ◽  
Liquid Crystal Polymer ◽  
Proof Of Concept ◽  
Optical Efficiency ◽  
Crystal Polymer ◽  
Light Efficiency

We demonstrate a light efficient virtual reality (VR) near-eye display (NED) design based on a directional display panel and a diffractive deflection film (DDF). The DDF was essentially a high-efficiency Pancharatnam-Berry phase optical element made of liquid crystal polymer. The essence of this design is directing most of the display light into the eyebox. The proposed method is applicable for both catadioptric and dioptric VR lenses. A proof-of-concept experiment was conducted with off-the-shelf optical parts, where the light efficiency was enhanced by more than 2 times.

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