Spatially resolved measurements of thermal parameters in colloidal suspensions in liquid crystals

2004 ◽  
Vol 85 (20) ◽  
pp. 4642-4644 ◽  
Author(s):  
F. Mercuri ◽  
U. Zammit ◽  
M. Marinelli
Keyword(s):  
Liquid Crystals ◽  
Colloidal Suspensions ◽  
Thermal Parameters ◽  
Spatially Resolved

scholarly journals Liquid crystal phase transitions in suspensions of mineral colloids: new life from old roots

2013 ◽  
Vol 371 (1988) ◽  
pp. 20120263 ◽  
Author(s):  
H. N. W. Lekkerkerker ◽  
G. J. Vroege
Keyword(s):  
Phase Transitions ◽  
Liquid Crystal ◽  
Liquid Crystals ◽  
Colloidal Suspensions ◽  
Crystal Phase ◽  
Liquid Crystal Phase ◽  
Future Developments ◽  
Mineral Particles ◽  
Crystal Phases ◽  
Liquid Crystal Phases

A review is given of the field of mineral colloidal liquid crystals : liquid crystal phases formed by individual mineral particles within colloidal suspensions. Starting from their discovery in the 1920s, we discuss developments on the levels of both fundamentals and applications. We conclude by highlighting some promising results from recent years, which may point the way towards future developments.

scholarly journals Director orientations in lyotropic liquid crystals: diffusion MRI mapping of the Saupe order tensor

2016 ◽  
Vol 18 (12) ◽  
pp. 8545-8553 ◽  
Author(s):  
Daniel Topgaard
Keyword(s):  
Liquid Crystals ◽  
Diffusion Mri ◽  
Orientational Order ◽  
Lyotropic Liquid Crystals ◽  
Order Tensor ◽  
Spatially Resolved

MRI with axisymmetric diffusion encoding enables spatially resolved quantification of domain orientations in surfactant-water liquid crystals with and without macroscopic orientational order.

Spatially resolved optical and electro-optic properties of electroclinic liquid crystals

1995 ◽  
Author(s):  
James R. Lindle ◽  
Steven R. Flom ◽  
Filbert J. Bartoli ◽  
Ranganathan Shashidhar ◽  
Banahalli R. Ratna ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Spatially Resolved ◽  
Electro Optic

scholarly journals Lyotropic Liquid Crystals from Colloidal Suspensions of Graphene Oxide

Crystals ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 455 ◽  
Author(s):  
Adam P. Draude ◽  
Ingo Dierking
Keyword(s):  
Carbon Nanotubes ◽  
Graphene Oxide ◽  
Liquid Crystal ◽  
Liquid Crystals ◽  
Liquid Crystalline ◽  
Colloidal Particles ◽  
Colloidal Suspensions ◽  
Lyotropic Liquid Crystals ◽  
Nanoscience And Nanotechnology ◽  
And Behavior

Lyotropic liquid crystals from colloidal particles have been known for more than a century, but have attracted a revived interest over the last few years. This is due to the developments in nanoscience and nanotechnology, where the liquid crystal order can be exploited to orient and reorient the anisotropic colloids, thus enabling, increasing and switching the preferential properties of the nanoparticles. In particular, carbon-based colloids like carbon nanotubes and graphene/graphene–oxide have increasingly been studied with respect to their lyotropic liquid crystalline properties over the recent years. We critically review aspects of lyotropic graphene oxide liquid crystal with respect to properties and behavior which seem to be generally established, but also discuss those effects that are largely unfamiliar so far, or as of yet of controversial experimental or theoretical outcome.

scholarly journals Quaternions and hybrid nematic disclinations

2013 ◽  
Vol 469 (2156) ◽  
pp. 20130204 ◽  
Author(s):  
Simon Čopar ◽  
Slobodan Žumer
Keyword(s):  
Liquid Crystals ◽  
Homotopy Theory ◽  
Classification Scheme ◽  
Colloidal Suspensions ◽  
The Self ◽  
Topological Classification ◽  
Winding Number ◽  
Linking Number ◽  
Disclination Line ◽  
Geometric Decomposition

Disclination lines in nematic liquid crystals can exist in different geometric conformations, characterized by their director profile. In certain confined colloidal suspensions and even more prominently in chiral nematics, the director profile may vary along the disclination line. We construct a robust geometric decomposition of director profile in closed disclination loops and use it to apply topological classification to linked loops with arbitrary variation of the profile, generalizing the self-linking number description of disclination loops with the winding number . The description bridges the gap between the known abstract classification scheme derived from homotopy theory and the observable local features of disclinations, allowing application of said theory to structures that occur in practice.

2D isotropic-nematic transition in colloidal suspensions of ellipsoids

Soft Matter ◽  
2021 ◽  
Author(s):  
Xinlan Tan ◽  
Ya Chen ◽  
Huaguang Wang ◽  
Zexin Zhang ◽  
Xinsheng Sean Ling
Keyword(s):  
Phase Transition ◽  
Liquid Crystals ◽  
Condensed Matter ◽  
Colloidal Suspensions ◽  
Two Dimensional ◽  
Unresolved Issue

Liquid crystals are important condensed matter systems for technological applications, as well as for fundamental studies. An important unresolved issue is the nature of the phase transition in a two-dimensional...

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