Gradient free energy of nematic liquid crystals with topological defects

1986 ◽  
Vol 19 (7) ◽  
pp. 937-942 ◽  
Author(s):  
H R Brand ◽  
K Kawasaki
Keyword(s):  
Free Energy ◽  
Liquid Crystals ◽  
Nematic Liquid Crystals ◽  
Topological Defects

scholarly journals Properties of twisted topological defects in 2D nematic liquid crystals

Soft Matter ◽  
2021 ◽  
Author(s):  
Daniel Pearce ◽  
Karsten Kruse
Keyword(s):  
Liquid Crystals ◽  
Nematic Liquid Crystals ◽  
Topological Defects ◽  
Two Dimensional

Topological defects are one of the most conspicuous features of liquid crystals. In two dimensional nematics, they have been shown to behave effectively as particles with both, charge and orientation,...

Visualising the crossover between 3D and 2D topological defects in nematic liquid crystals

2018 ◽  
Vol 45 (13-15) ◽  
pp. 2022-2032 ◽  
Author(s):  
Sajedeh Afghah ◽  
Robin L. B. Selinger ◽  
Jonathan V. Selinger
Keyword(s):  
Liquid Crystals ◽  
Nematic Liquid Crystals ◽  
Topological Defects

Spontaneously Twisted Nonchiral Nematic Liquid Crystals

1990 ◽  
Vol 45 (6) ◽  
pp. 783-789 ◽  
Author(s):  
A. Chrzanowska
Keyword(s):  
Free Energy ◽  
Liquid Crystals ◽  
Elastic Constant ◽  
Nematic Liquid Crystals ◽  
Model Potential ◽  
Higher Order ◽  
Microscopic Model ◽  
Stability Conditions ◽  
Higher Order Terms ◽  
Potential Stability

AbstractNematic liquid crystals exhibiting a negative K2 elastic constant are discussed on the basis of a microscopic model potential. Stability conditions are satisfied by taking into account higher order terms in the expansion of the free energy. A continuous Freederiks effect is predicted for systems with negative K2.

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