A New Interferometric Technique for the Measurement of Elastic Anisotropy of Nematic Liquid Crystals

1998 ◽  
Vol 320 (1) ◽  
pp. 1-9
Author(s):  
Domenico De Feo ◽  
Sergio De Nicola ◽  
Pietro Ferraro ◽  
Pasqualino Maddalena ◽  
Giovanni Pierattini
Keyword(s):  
Liquid Crystals ◽  
Elastic Anisotropy ◽  
Nematic Liquid Crystals ◽  
Interferometric Technique

New structure induced by elastic anisotropy in cylindrical nematic liquid crystal

2017 ◽  
Vol 13 (2) ◽  
pp. 4705-4717
Author(s):  
Zhang Qian ◽  
Zhou Xuan ◽  
Zhang Zhidong
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystals ◽  
Nematic Liquid Crystal ◽  
Elastic Anisotropy ◽  
Nematic Liquid Crystals ◽  
Gennes Theory

Basing on Landau–de Gennes theory, this study investigated the chiral configurations of nematic liquid crystals confined to cylindrical capillaries with homeotropic anchoring on the cylinder walls. When the elastic anisotropy (L2/L1) is large enough, a new structure results from the convergence of two opposite escape directions of the heterochiral twist and escape radial (TER) configurations. The new defect presents when L2/L1≥7 and disappears when L2/L1<7. The new structure possesses a heterochiral hyperbolic defect at the center and two homochiral radial defects on both sides. The two radial defects show different chiralities.

scholarly journals Anisotropic wave propagation in nematic liquid crystals

Soft Matter ◽  
2014 ◽  
Vol 10 (41) ◽  
pp. 8296-8307 ◽  
Author(s):  
Paolo Biscari ◽  
Antonio DiCarlo ◽  
Stefano S. Turzi
Keyword(s):  
Wave Propagation ◽  
Liquid Crystals ◽  
Elastic Anisotropy ◽  
Nematic Liquid Crystals

We show that elastic anisotropy and relaxation are at the origin of the main experimental features of nematoacoustics.

Nematic liquid crystals in planar and cylindrical hybrid cells: Role of elastic anisotropy on the director deformations

2015 ◽  
Vol 92 (1) ◽  
Author(s):  
R. T. Teixeira-Souza ◽  
C. Chiccoli ◽  
P. Pasini ◽  
L. R. Evangelista ◽  
C. Zannoni
Keyword(s):  
Liquid Crystals ◽  
Elastic Anisotropy ◽  
Nematic Liquid Crystals ◽  
Hybrid Cells

The electrohydrodynamic instability in twisted nematic liquid crystals

1994 ◽  
Vol 4 (2) ◽  
pp. 239-252 ◽  
Author(s):  
A. Hertrich ◽  
A. P. Krekhov ◽  
O. A. Scaldin
Keyword(s):  
Liquid Crystals ◽  
Nematic Liquid Crystals ◽  
Electrohydrodynamic Instability ◽  
Twisted Nematic

Surface disclinations in nematic liquid crystals

1975 ◽  
Vol 36 (1) ◽  
pp. 59-67 ◽  
Author(s):  
V. Vitek ◽  
M. Kléman
Keyword(s):  
Liquid Crystals ◽  
Nematic Liquid Crystals
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