Interaction between Particles in a Nematic Liquid Crystal: Numerical Study Using the Landau-de Gennes Continuum Theory

2005 ◽  
Vol 435 (1) ◽  
pp. 63/[723]-74/[734] ◽  
Author(s):  
Jun-ichi Fukuda ◽  
Hiroshi Yokoyama ◽  
Makoto Yoneya ◽  
Holger Stark
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Numerical Study ◽  
Continuum Theory

scholarly journals Instabilities, defects, and defect ordering in an overdamped active nematic

Soft Matter ◽  
2016 ◽  
Vol 12 (17) ◽  
pp. 3854-3859 ◽  
Author(s):  
Elias Putzig ◽  
Gabriel S. Redner ◽  
Arvind Baskaran ◽  
Aparna Baskaran
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Continuum Theory

We consider a phenomenological continuum theory for an extensile, overdamped active nematic liquid crystal, applicable in the dense regime.

scholarly journals Dynamic behavior of a nematic liquid crystal with added carbon nanotubes in an electric field

2018 ◽  
Vol 9 ◽  
pp. 233-241 ◽  
Author(s):  
Emil Petrescu ◽  
Cristina Cirtoaje
Keyword(s):  
Carbon Nanotubes ◽  
Relaxation Time ◽  
Liquid Crystal ◽  
Electric Field ◽  
Dynamic Behavior ◽  
Nematic Liquid Crystal ◽  
Relaxation Times ◽  
Continuum Theory ◽  
Pure Liquid ◽  
Significant Difference

The dynamic behavior of a nematic liquid crystal with added carbon nanotubes (CNTs) in an electric field was analyzed. A theoretical model based on elastic continuum theory was developed and the relaxation times of nematic liquid crystals with CNTs were evaluated. Experiments made with single-walled carbon nanotubes dispersed in nematic 4-cyano-4’-pentylbiphenyl (5CB) indicated a significant difference of the relaxation time when compared to pure liquid crystal. We also noticed that the relaxation time when the field is switched off depends on how long the field was applied. It is shorter when the field is switched off immediately after application and longer when the field was applied for at least one hour.

Changing the symmetry of a homogeneous instability with a change in temperature in a stationary shear flow of a nematic with weak boundary conditions in an electromagnetic field

2012 ◽  
Vol 9 (2) ◽  
pp. 101-106
Author(s):  
I.Sh Nasibullayev
Keyword(s):  
Electromagnetic Field ◽  
Liquid Crystal ◽  
Shear Flow ◽  
Boundary Conditions ◽  
Nematic Liquid Crystal ◽  
Numerical Study ◽  
Weak Boundary ◽  
Weak Boundary Conditions

In this work, a numerical study is made of the induced switching symmetry of a homogeneous instability by temperature in a stationary shear flow of a nematic liquid crystal under electromagnetic field with weak boundary conditions.

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