scholarly journals Local chiral symmetry breaking in triatic liquid crystals

2012 ◽  
Vol 3 (1) ◽  
Author(s):  
Kun Zhao ◽  
Robijn Bruinsma ◽  
Thomas G. Mason
Keyword(s):  
Liquid Crystals ◽  
Symmetry Breaking ◽  
Chiral Symmetry ◽  
Chiral Symmetry Breaking

scholarly journals Chiral symmetry breaking in bent-core liquid crystals

2009 ◽  
Vol 79 (4) ◽  
Author(s):  
Lech Longa ◽  
Grzegorz Pająk ◽  
Thomas Wydro
Keyword(s):  
Liquid Crystals ◽  
Symmetry Breaking ◽  
Chiral Symmetry ◽  
Chiral Symmetry Breaking

scholarly journals Chiral Symmetry Breaking in Liquid Crystals: Appearance of Ferroelectricity and Antiferroelectricity

Symmetry ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 1900
Author(s):  
Yoichi Takanishi
Keyword(s):  
Liquid Crystals ◽  
Symmetry Breaking ◽  
Chiral Symmetry ◽  
Chiral Symmetry Breaking ◽  
Future Prospects ◽  
X Ray ◽  
X Ray Scattering ◽  
Ferroelectricity And Antiferroelectricity ◽  
Two Phases ◽  
Successive Phase

The study of chiral symmetry breaking in liquid crystals and the consequent emergence of ferroelectric and antiferroelectric phases is described. Furthermore, we show that the frustration between two phases induces a variety of structural phases called subphases and that resonant X-ray scattering is a powerful tool for the structural analysis of these complicated subphases. Finally, we discuss the future prospects for clarifying the origin of such successive phase transition.

scholarly journals Chiral structures from achiral liquid crystals in cylindrical capillaries

2015 ◽  
Vol 112 (15) ◽  
pp. E1837-E1844 ◽  
Author(s):  
Joonwoo Jeong ◽  
Louis Kang ◽  
Zoey S. Davidson ◽  
Peter J. Collings ◽  
Tom C. Lubensky ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Symmetry Breaking ◽  
Chiral Symmetry ◽  
Elastic Anisotropy ◽  
Double Helix ◽  
Chiral Symmetry Breaking ◽  
Sunset Yellow ◽  
Chiral Structures ◽  
Simple Boundary ◽  
Cylindrical Axis

We study chiral symmetry-broken configurations of nematic liquid crystals (LCs) confined to cylindrical capillaries with homeotropic anchoring on the cylinder walls (i.e., perpendicular surface alignment). Interestingly, achiral nematic LCs with comparatively small twist elastic moduli relieve bend and splay deformations by introducing twist deformations. In the resulting twisted and escaped radial (TER) configuration, LC directors are parallel to the cylindrical axis near the center, but to attain radial orientation near the capillary wall, they escape along the radius through bend and twist distortions. Chiral symmetry-breaking experiments in polymer-coated capillaries are carried out using Sunset Yellow FCF, a lyotropic chromonic LC with a small twist elastic constant. Its director configurations are investigated by polarized optical microscopy and explained theoretically with numerical calculations. A rich phenomenology of defects also arises from the degenerate bend/twist deformations of the TER configuration, including a nonsingular domain wall separating domains of opposite twist handedness but the same escape direction and singular point defects (hedgehogs) separating domains of opposite escape direction. We show the energetic preference for singular defects separating domains of opposite twist handedness compared with those of the same handedness, and we report remarkable chiral configurations with a double helix of disclination lines along the cylindrical axis. These findings show archetypally how simple boundary conditions and elastic anisotropy of confined materials lead to multiple symmetry breaking and how these broken symmetries combine to create a variety of defects.

scholarly journals A Possible Resolution to Troubles of SU(2) Center Vortex Detection in Smooth Lattice Configurations

Universe ◽  
2021 ◽  
Vol 7 (5) ◽  
pp. 122
Author(s):  
Rudolf Golubich ◽  
Manfried Faber
Keyword(s):  
Symmetry Breaking ◽  
Quantum Chromodynamics ◽  
Chiral Symmetry ◽  
Chiral Symmetry Breaking ◽  
Vortex Model ◽  
Center Vortex ◽  
Vortex Detection

The center vortex model of quantum-chromodynamics can explain confinement and chiral symmetry breaking. We present a possible resolution for problems of the vortex detection in smooth configurations and discuss improvements for the detection of center vortices.

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