IR dichroism study of orientational ordering of liquid-crystalline acrylates

1999 ◽  
Vol 48 (2) ◽  
pp. 318-322 ◽  
Author(s):  
V. L. Khodzhaeva ◽  
I. I. Konstantinov ◽  
P. L. Magagnini ◽  
E. L. Tassi
Keyword(s):  
Liquid Crystalline ◽  
Ir Dichroism ◽  
Orientational Ordering

Orientational Ordering of Dyes in the Glassy State of Liquid-Crystalline Side Group Polymers

1986 ◽  
Vol 1 (4) ◽  
pp. 319-325 ◽  
Author(s):  
H. Ringsdorf ◽  
H. W. Schmidt ◽  
G. Baur ◽  
R. Kiefer ◽  
F. Windscheid
Keyword(s):  
Liquid Crystalline ◽  
Glassy State ◽  
Side Group ◽  
Orientational Ordering

scholarly journals Symmetry breaking and structure of a mixture of nematic liquid crystals and anisotropic nanoparticles

2010 ◽  
Vol 6 ◽  
Author(s):  
Marjan Krasna ◽  
Matej Cvetko ◽  
Milan Ambrožič
Keyword(s):  
Random Fields ◽  
Short Range ◽  
Liquid Crystalline ◽  
Short Range Order ◽  
Isotropic Phase ◽  
Nematic Ordering ◽  
Domain Type ◽  
Elastic Forces ◽  
Orientational Ordering ◽  
The Impact

Orientational ordering of a homogeneous mixture of uniaxial liquid crystalline (LC) molecules and magnetic nanoparticles (NPs) is studied using the Lebwohl–Lasher lattice model. We consider cases where NPs tend to be oriented perpendicularly to LC molecules due to elastic forces. We study domain-type configurations of ensembles, which are quenched from the isotropic phase. We show that for large enough concentrations of NPs the long range uniaxial nematic ordering is replaced by short range order exhibiting strong biaxiality. This suggests that the impact of NPs on orientational ordering of LCs for appropriate concentrations of NPs is reminiscent to the influence of quenched random fields which locally enforce a biaxial ordering.

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