Cylindrical defect structures formed by chiral nematic liquid crystals in quasi-one-dimensional systems

2020 ◽  
Vol 22 (29) ◽  
pp. 16896-16904
Author(s):  
Hiroaki Tsujinoue ◽  
Takuma Nozawa ◽  
Noriyoshi Arai
Keyword(s):  
Liquid Crystals ◽  
Temperature Dependence ◽  
Nematic Liquid Crystals ◽  
Defect Structures ◽  
One Dimensional ◽  
Chiral Nematic ◽  
System P

Temperature dependence of the stable morphologies of the nanotube system.

scholarly journals Chiral-nematic liquid crystals as one dimensional photonic materials in optical sensors

2014 ◽  
Vol 2 (33) ◽  
pp. 6695-6705 ◽  
Author(s):  
D. J. Mulder ◽  
A. P. H. J. Schenning ◽  
C. W. M. Bastiaansen
Keyword(s):  
Liquid Crystals ◽  
Optical Sensors ◽  
Nematic Liquid Crystals ◽  
Photonic Materials ◽  
One Dimensional ◽  
Chiral Nematic

Current developments in the field of thermotropic chiral-nematic liquid crystals as sensors are discussed.

scholarly journals Emergence and stabilization of transient twisted defect structures in confined achiral liquid crystals at a phase transition.

Soft Matter ◽  
2021 ◽  
Author(s):  
Jose X Velez ◽  
Zhaofei Zheng ◽  
Daniel A. Beller ◽  
Francesca Serra
Keyword(s):  
Phase Transition ◽  
Liquid Crystals ◽  
Soft Matter ◽  
Capillary Tube ◽  
Nematic Liquid Crystals ◽  
Defect Structures

Spontaneous emergence of chirality is a pervasive theme in soft matter. We report a transient twist forming in achiral nematic liquid crystals confined to a capillary tube with square cross...

Circularly polarized luminescence in chiral nematic liquid crystals: generation and amplification

2021 ◽  
Author(s):  
Xuefeng Yang ◽  
Xue Jin ◽  
Tonghan Zhao ◽  
Pengfei Duan
Keyword(s):  
Liquid Crystals ◽  
Nematic Liquid Crystals ◽  
Excellent Performance ◽  
Circularly Polarized ◽  
Chiral Nematic ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence

Chiral nematic liquid crystals exhibit excellent performance in obtaining high luminescence dissymmetry factor of circularly polarized luminescence.

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.

Nematicons routing through two types of disclination lines in chiral nematic liquid crystals

2014 ◽  
Vol 23 (04) ◽  
pp. 1450042 ◽  
Author(s):  
Michał Kwaśny ◽  
Urszula A. Laudyn ◽  
Katarzyna A. Rutkowska ◽  
Mirosław A. Karpierz
Keyword(s):  
Liquid Crystals ◽  
Wave Vector ◽  
Nematic Liquid Crystals ◽  
Input Beam ◽  
Oriented Sample ◽  
Beam Position ◽  
Chiral Nematic ◽  
Different Types ◽  
Optimal Beam ◽  
Beam Parameters

In this work, we study nematicons propagation at the disclination lines in a wedge-shaped planarly oriented sample. Using optimal beam parameters for light self-trapping and varying the input beam position and direction of the wave vector k with respect to the z-axis, we gain insight in the nematicons propagation in the highly disturbed area around two different types of disclination lines in chiral nematic.

Chlorin e6 13(N)-methylamide-15,17-dimethyl ester and its nickel complex as the inducers of chiral nematic liquid crystals

2021 ◽  
pp. 118330
Author(s):  
V.A. Burmistrov ◽  
I.V. Novikov ◽  
V.V. Aleksandriiskii ◽  
D.V. Belykh ◽  
O.M. Startseva ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Nickel Complex ◽  
Nematic Liquid Crystals ◽  
Dimethyl Ester ◽  
Chlorin E6 ◽  
Chiral Nematic
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