scholarly journals Orientation Dependent Interaction and Self‐Assembly of Cubic Magnetic Colloids in a Nematic Liquid Crystal

2020 ◽  
Vol 8 (7) ◽  
pp. 1901585 ◽  
Author(s):  
Devika Venkuzhy Sudhakaran ◽  
Ravi Kumar Pujala ◽  
Surajit Dhara
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Self Assembly ◽  
Magnetic Colloids ◽  
Dependent Interaction

scholarly journals Mechanisms of Chiral Transfer in Optically Active Dopant – Nematic Liquid Crystal Systems

2020 ◽  
Vol 20 (4) ◽  
pp. 6-26
Author(s):  
V. A. Burmistrov ◽  
V. V. Aleksandriiskii ◽  
I. V. Novikov ◽  
O. I. Koifman
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Self Assembly ◽  
Liquid Crystalline ◽  
High Efficiency ◽  
Stationary Phases ◽  
Theoretical Description ◽  
Optically Active ◽  
Axial Coordination ◽  
Chiral Dopants

Induction of helical mesophases by incorporating chiral dopants into the nematics matrix is the promising modern trends in the chemistry of liquid crystals. This process is associated with a unique phenomenon - an amplification of chirality in liquid-crystalline phases, which ensures the detection of enantiomers by their chiral induction, much more sensitive than other methods. The relevance of this approach is due to the need to create perspective electro-optical devices operating with ultra-low control voltages based on twist effects, chromatographic stationary phases with high chiral selectivity, flexible magnets, photo-sensitive nanostructures, and other smart LC materials. The successful solution of these problems is impossible without experimental research and theoretical comprehension of the mechanisms of third level chiral transfer optically active dopant – nematic liquid crystal. In the last decade, a large number of works have appeared on the solution of these problems. This review is devoted to a generalization of the experimental results and a theoretical description of the transfer of molecular chirality to orientationally ordered systems with the participation of both chiral molecular substituents with an asymmetric carbon atom and planar or quasi-planar fragments chirally distorted relative to each other. The stereochemical aspects of induction associated with the structural correspondences of the dopant and nematic liquid crystal, as well as the main classes of optically active additives, are discussed. Application of metal complexes, both Werner and macroheterocyclic, are presented. Special attention is paid to the results of the mechanisms study of chiral transfer due to various intermolecular interactions: hydrogen bonding, axial coordination, and the formation of inclusion compounds. The high efficiency of induction of spiral mesophases has been demonstrated with a combination of different self-assembly mechanisms in liquid crystal - chiral additive systems.

Orientation, interaction and laser assisted self-assembly of organic single-crystal micro-sheets in a nematic liquid crystal

Soft Matter ◽  
2015 ◽  
Vol 11 (38) ◽  
pp. 7674-7679 ◽  
Author(s):  
M. V. Rasna ◽  
K. P. Zuhail ◽  
U. V. Ramudu ◽  
R. Chandrasekar ◽  
J. Dontabhaktuni ◽  
...  
Keyword(s):  
Experimental Study ◽  
Liquid Crystal ◽  
Liquid Crystals ◽  
Single Crystal ◽  
Nematic Liquid Crystal ◽  
Self Assembly ◽  
Nematic Liquid Crystals ◽  
Directed Assembly ◽  
Orientation Interaction ◽  
Organic Single Crystal

In this paper we report first experimental study on the orientation, interaction and directed-assembly of single crystal micro-sheets in nematic liquid crystals.

Self-Assembly of a Synthetic Opal Infiltrated with Liquid Crystal Like Photonic Crystal

2004 ◽  
Vol 97-98 ◽  
pp. 245-250
Author(s):  
Loreta Rasteniene ◽  
Stasys Pajeda ◽  
Rimas Vaisnoras
Keyword(s):  
Refractive Index ◽  
Liquid Crystal ◽  
Photonic Crystal ◽  
Nematic Liquid Crystal ◽  
Self Assembly ◽  
Stop Band ◽  
Linear Dichroism ◽  
Synthetic Opal ◽  
Multiple Diffraction ◽  
Visible Spectra

We have studied transmission and linear dichroism spectra of synthetic opal, refractive index n-= 1.342, infiltrated with nematic liquid crystal with averaged refractive index n = 1.596 or with water n = 1.30 and alcohol n = 1.28. We demonstrating that the position of the stop band in the visible spectra is shifted by changing infiltrated material, or temperature, or by variation angle of light incidence. Multiple diffraction are discussed.

Large Area Self-Assembly of Nematic Liquid-Crystal-Functionalized Gold Nanorods

2012 ◽  
Vol 23 (11) ◽  
pp. 1393-1403 ◽  
Author(s):  
S. Umadevi ◽  
Xiang Feng ◽  
Torsten Hegmann
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Gold Nanorods ◽  
Self Assembly ◽  
Large Area

Self-Assembly of dPS-Liquid Crystalline Diblock Copolymer in a Nematic Liquid Crystal Solvent

2012 ◽  
Vol 45 (15) ◽  
pp. 6168-6175 ◽  
Author(s):  
Soo-Young Park ◽  
Thangavelu Kavitha ◽  
Tahseen Kamal ◽  
Waliullah Khan ◽  
Taegyu Shin ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Diblock Copolymer ◽  
Self Assembly ◽  
Liquid Crystalline

scholarly journals Large-area bulk self-assembly of plasmonic nanorods in nematic liquid crystal via surface-mediated alignment

2013 ◽  
Vol 3 (11) ◽  
pp. 1918 ◽  
Author(s):  
Qingkun Liu ◽  
Nan Wang ◽  
Pengxin Chen ◽  
Yuan Zhang ◽  
Sailing He
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Self Assembly ◽  
Large Area

Dynamics of ethyl cellulose nanoparticle self-assembly at the interface of a nematic liquid crystal droplet

2017 ◽  
Vol 19 (36) ◽  
pp. 24955-24960 ◽  
Author(s):  
Yining Han ◽  
Navid Bizmark ◽  
Nasser Mohieddin Abukhdeir ◽  
Marios A. Ioannidis
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Self Assembly ◽  
Ethyl Cellulose ◽  
Crystal Water ◽  
General Methodology ◽  
Liquid Crystal Droplet

A general methodology for the assessment of nanoparticle adsorption at the liquid crystal–water interfaces.

Self-assembly of a liquid crystal ABA triblock copolymer in a nematic liquid crystal solvent

Polymer ◽  
2014 ◽  
Vol 55 (16) ◽  
pp. 3995-4002 ◽  
Author(s):  
Mohammad Tariqul Islam ◽  
Tahseen Kamal ◽  
Taegyu Shin ◽  
Baekseok Seong ◽  
Soo-Young Park
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Self Assembly ◽  
Triblock Copolymer ◽  
Aba Triblock Copolymer

Supramolecular self-assembly of thiol functionalized pentaalkynylbenzene-decorated gold nanoparticles exhibiting a room temperature discotic nematic liquid crystal phase

2018 ◽  
Vol 6 (9) ◽  
pp. 2303-2310 ◽  
Author(s):  
Monika Gupta ◽  
Subhransu Sekhar Mohapatra ◽  
Surajit Dhara ◽  
Santanu Kumar Pal
Keyword(s):  
Gold Nanoparticles ◽  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Self Assembly ◽  
Room Temperature ◽  
Crystal Phase ◽  
Liquid Crystal Phase

First example of a room temperature discotic nematic liquid crystal made of gold nanoparticles.

Sign in / Sign up

Export Citation Format

Share Document