scholarly journals Gold nanoparticle self-assembly moderated by a cholesteric liquid crystal

Soft Matter ◽  
2013 ◽  
Vol 9 (39) ◽  
pp. 9366 ◽  
Author(s):  
Joel S. Pendery ◽  
Olivier Merchiers ◽  
Delphine Coursault ◽  
Johan Grand ◽  
Habib Ayeb ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Gold Nanoparticle ◽  
Self Assembly ◽  
Cholesteric Liquid Crystal

scholarly journals Periodic assembly of nanoparticle arrays in disclinations of cholesteric liquid crystals

2017 ◽  
Vol 114 (9) ◽  
pp. 2137-2142 ◽  
Author(s):  
Yunfeng Li ◽  
Elisabeth Prince ◽  
Sangho Cho ◽  
Alinaghi Salari ◽  
Youssef Mosaddeghian Golestani ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystals ◽  
Self Assembly ◽  
Soft Matter ◽  
Cholesteric Liquid Crystal ◽  
Topological Defects ◽  
Spatial Inhomogeneity ◽  
Cholesteric Phase ◽  
Anisotropic Surface ◽  
Linear Defects

An important goal of the modern soft matter science is to discover new self-assembly modalities to precisely control the placement of small particles in space. Spatial inhomogeneity of liquid crystals offers the capability to organize colloids in certain regions such as the cores of the topological defects. Here we report two self-assembly modes of nanoparticles in linear defects-disclinations in a lyotropic colloidal cholesteric liquid crystal: a continuous helicoidal thread and a periodic array of discrete beads. The beads form one-dimensional arrays with a periodicity that matches half a pitch of the cholesteric phase. The periodic assembly is governed by the anisotropic surface tension and elasticity at the interface of beads with the liquid crystal. This mode of self-assembly of nanoparticles in disclinations expands our ability to use topological defects in liquid crystals as templates for the organization of nanocolloids.

Supramolecular self-assembly of a novel hydrogen-bonded cholesteric liquid crystal exhibiting macromolecular behaviour

2013 ◽  
Vol 40 (3) ◽  
pp. 314-320 ◽  
Author(s):  
Mahdi Roohnikan ◽  
Morteza Ebrahimi ◽  
Seyed Reza Ghaffarian ◽  
Nobuyuki Tamaoki
Keyword(s):  
Liquid Crystal ◽  
Self Assembly ◽  
Cholesteric Liquid Crystal ◽  
Hydrogen Bonded

scholarly journals Solvent-induced self-assembly of uniform lying helix alignment of the cholesteric liquid crystal phase for the flexoelectro-optic effect

2018 ◽  
Vol 45 (5) ◽  
pp. 774-782 ◽  
Author(s):  
S. Bolis ◽  
C. C. Tartan ◽  
J. Beeckman ◽  
P. Kockaert ◽  
S. J. Elston ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Self Assembly ◽  
Cholesteric Liquid Crystal ◽  
Crystal Phase ◽  
Liquid Crystal Phase

Chiral Phases of a Confined Cholesteric Liquid Crystal: Anchoring-Dependent Helical and Smectic Self-Assembly in Nanochannels

2016 ◽  
Vol 120 (21) ◽  
pp. 11727-11738 ◽  
Author(s):  
Sylwia Całus ◽  
Mark Busch ◽  
Andriy V. Kityk ◽  
Wiktor Piecek ◽  
Patrick Huber
Keyword(s):  
Liquid Crystal ◽  
Self Assembly ◽  
Cholesteric Liquid Crystal ◽  
Chiral Phases

Single-substrate cholesteric liquid crystal displays by colloidal self-assembly

2006 ◽  
Vol 88 (4) ◽  
pp. 043502 ◽  
Author(s):  
Krishnan Chari ◽  
Charles M. Rankin ◽  
David M. Johnson ◽  
Thomas N. Blanton ◽  
Robert G. Capurso
Keyword(s):  
Liquid Crystal ◽  
Self Assembly ◽  
Cholesteric Liquid Crystal ◽  
Liquid Crystal Displays ◽  
Single Substrate

Dispersion of proton spin-lattice relaxation in a cholesteric liquid crystal

1983 ◽  
Vol 44 (10) ◽  
pp. 1179-1184 ◽  
Author(s):  
M. Vilfan ◽  
R. Blinc ◽  
J. Dolinšek ◽  
M. Ipavec ◽  
G. Lahajnar ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Cholesteric Liquid Crystal ◽  
Lattice Relaxation ◽  
Proton Spin ◽  
Spin Lattice Relaxation ◽  
Spin Lattice

Reversible microscale assembly of nanoparticles driven by the phase transition of a thermotropic liquid crystal

2017 ◽  
Author(s):  
Niamh Mac Fhionnlaoich ◽  
Stephen Schrettl ◽  
Nicholas B. Tito ◽  
Ye Yang ◽  
Malavika Nair ◽  
...  
Keyword(s):  
Phase Transition ◽  
Liquid Crystal ◽  
Self Assembly ◽  
Nematic Phase ◽  
Hierarchical Control ◽  
Building Blocks ◽  
Model System ◽  
Microscopic Level ◽  
Reversible Process ◽  
Thermotropic Liquid Crystal

The arrangement of nanoscale building blocks into patterns with microscale periodicity is challenging to achieve via self-assembly processes. Here, we report on the phase transition-driven collective assembly of gold nanoparticles in a thermotropic liquid crystal. A temperature-induced transition from the isotropic to the nematic phase leads to the assembly of individual nanometre-sized particles into arrays of micrometre-sized aggregates, whose size and characteristic spacing can be tuned by varying the cooling rate. This fully reversible process offers hierarchical control over structural order on the molecular, nanoscopic, and microscopic level and is an interesting model system for the programmable patterning of nanocomposites with access to micrometre-sized periodicities.

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