Symmetry breaking in nematic liquid crystals: analogy with cosmology and magnetism

2013 ◽  
Vol 25 (40) ◽  
pp. 404201 ◽  
Author(s):  
R Repnik ◽  
A Ranjkesh ◽  
V Simonka ◽  
M Ambrozic ◽  
Z Bradac ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Symmetry Breaking ◽  
Nematic Liquid Crystals

Tunable and programmable topological valley transport in photonic crystals with liquid crystals

2022 ◽  
Author(s):  
Yulin Zhao ◽  
Feng Liang ◽  
Xiangru Wang ◽  
Deshuang Zhao ◽  
Bing-Zhong Wang
Keyword(s):  
Wave Propagation ◽  
Liquid Crystals ◽  
Photonic Crystals ◽  
Symmetry Breaking ◽  
Relative Permittivity ◽  
Nematic Liquid Crystals ◽  
Inversion Symmetry ◽  
Edge States ◽  
Beam Splitting ◽  
Topological Transition

Abstract Topological valley transport in photonic crystals (PCs) has attracted great attention owing to its edge modes immune to backscattering. However, flexibly dynamically controlling and reconfiguring the pathway of the topological one-way propagation is still challenging. Here, we propose a tunable and programmable valley PC structure based on nematic liquid crystals (LCs). Inversion symmetry breaking and topological transition are implemented through controlling the relative permittivity of the LC cells. Topological protection of valley edge states and valley-locked beam splitting are demonstrated. Moreover, the LC-based PC can be discretized to a number of supercells, each of which can be coded with “0” or “1”. The wave propagation pathway can be dynamically reconfigured by programming different coding patterns.

scholarly journals Symmetry Breaking and Restoration in the Ginzburg–Landau Model of Nematic Liquid Crystals

2018 ◽  
Vol 28 (3) ◽  
pp. 1079-1107 ◽  
Author(s):  
Marcel G. Clerc ◽  
Michał Kowalczyk ◽  
Panayotis Smyrnelis
Keyword(s):  
Liquid Crystals ◽  
Symmetry Breaking ◽  
Nematic Liquid Crystals ◽  
Ginzburg Landau ◽  
Landau Model

Symmetry breaking and interaction of colloidal particles in nematic liquid crystals

2002 ◽  
Vol 65 (2) ◽  
Author(s):  
B. I. Lev ◽  
S. B. Chernyshuk ◽  
P. M. Tomchuk ◽  
H. Yokoyama
Keyword(s):  
Liquid Crystals ◽  
Symmetry Breaking ◽  
Colloidal Particles ◽  
Nematic Liquid Crystals

New Symmetry Breaking in Nonlinear Electroconvection of Nematic Liquid Crystals

1997 ◽  
Vol 79 (12) ◽  
pp. 2367-2370 ◽  
Author(s):  
Emmanuel Plaut ◽  
Werner Decker ◽  
Axel G. Rossberg ◽  
Lorenz Kramer ◽  
Werner Pesch ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Symmetry Breaking ◽  
Nematic Liquid Crystals

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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