Formation Mechanism of Helical Polyacetylene with Spiral Morphology in Asymmetric Reaction Field Consisting of Chiral Nematic Liquid Crystal

2010 ◽  
Vol 43 (20) ◽  
pp. 8363-8372 ◽  
Author(s):  
Taizo Mori ◽  
Mutsumasa Kyotani ◽  
Kazuo Akagi
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Formation Mechanism ◽  
Asymmetric Reaction ◽  
Reaction Field ◽  
Chiral Nematic

A robust and inexpensive all optical switch with chiral nematic liquid crystal

2021 ◽  
Vol 119 ◽  
pp. 111306
Author(s):  
Hossein mehrzad ◽  
Ezeddin Mohajerani ◽  
Mohammad Mohammadimasoudi ◽  
Kristiaan Neyts
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Optical Switch ◽  
Chiral Nematic ◽  
All Optical ◽  
All Optical Switch

scholarly journals Nanocomposites of Polyaniline and Cellulose Nanocrystals Prepared in Lyotropic Chiral Nematic Liquid Crystals

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Dawei Zhang ◽  
Lihong Zhang ◽  
Bingzhe Wang ◽  
Guangzhe Piao
Keyword(s):  
Liquid Crystals ◽  
Cellulose Nanocrystals ◽  
Nematic Liquid Crystals ◽  
Weight Ratio ◽  
Asymmetric Reaction ◽  
Reaction Field ◽  
Electron Microscopies ◽  
Chiral Nematic ◽  
Before And After

Stable lyotropic chiral nematic liquid crystals (N*-LCs) of cellulose nanocrystals (CNs) were prepared via hydrolysis using sulfuric acid. The lyotropic N*-LCs were used as an asymmetric reaction field to synthesize polyaniline (PANI) onto CNs by in situ polymerization. As a primary step, we examined the mesophase transition of the N*-LCs of CNs suspension before and after in situ polymerization of aniline (ANI) by polarizing optical microscopy. The structure of nanocomposites of PANI/CNs was investigated at a microscopic level using Fourier transform infrared spectroscopy and X-ray diffraction. Influence of the CNs-to-ANI ratio on the morphology of the nanocomposites was also investigated at macroscopic level by scanning electron and transmission electron microscopies. It is found that the weight ratio of CNs to aniline in the suspension significantly influenced the size of the PANI particles and interaction between CNs and PANI. Moreover, electrical properties of the obtained PANI/CNs films were studied using standard four-probe technique. It is expected that the lyotropic N*-LCs of CNs might be available for an asymmetric reaction field to produce novel composites of conjugated materials.

Optically activated shutter using a photo-tunable short-pitch chiral nematic liquid crystal

2013 ◽  
Vol 103 (10) ◽  
pp. 101105 ◽  
Author(s):  
S. M. Morris ◽  
M. M. Qasim ◽  
K. T. Cheng ◽  
F. Castles ◽  
D.-H. Ko ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Chiral Nematic

Studies on the electro‐optical properties of chiral nematic liquid crystal/aerosil particle composites

2008 ◽  
Vol 35 (1) ◽  
pp. 49-54 ◽  
Author(s):  
Bofu Li ◽  
Hua Huang ◽  
Xiaokang Ding ◽  
Wenbo Li ◽  
Yuhai Yin ◽  
...  
Keyword(s):  
Optical Properties ◽  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Chiral Nematic

scholarly journals Microsecond-range optical shutter for unpolarized light with chiral nematic liquid crystal

AIP Advances ◽  
2015 ◽  
Vol 5 (4) ◽  
pp. 047122
Author(s):  
Mohammad Mohammadimasoudi ◽  
Jungsoon Shin ◽  
Keechang Lee ◽  
Kristiaan Neyts ◽  
Jeroen Beeckman
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Unpolarized Light ◽  
Chiral Nematic ◽  
Optical Shutter
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