scholarly journals Macroscopic chiral symmetry breaking in monolayers of achiral nonconvex platelets

Soft Matter ◽  
2017 ◽  
Vol 13 (45) ◽  
pp. 8618-8624 ◽  
Author(s):  
Nikoletta Pakalidou ◽  
David L. Cheung ◽  
Andrew J. Masters ◽  
Carlos Avendaño
Keyword(s):  
Symmetry Breaking ◽  
Chiral Symmetry ◽  
Materials Science ◽  
Fundamental Problem ◽  
Chiral Symmetry Breaking ◽  
Building Blocks ◽  
Chiral Structures

The fabrication of chiral structures using achiral building blocks is a fundamental problem that remains a challenge in materials science. Pictured are local chiral configurations formed by non-convex (achiral) platelets with 6- and 4-fold symmetries.

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.

scholarly journals Spontaneous chiral symmetry breaking in the massive Landau gauge: Realistic running coupling

2021 ◽  
Vol 103 (9) ◽  
Author(s):  
Marcela Peláez ◽  
Urko Reinosa ◽  
Julien Serreau ◽  
Matthieu Tissier ◽  
Nicolás Wschebor
Keyword(s):  
Symmetry Breaking ◽  
Chiral Symmetry ◽  
Chiral Symmetry Breaking ◽  
Landau Gauge ◽  
Spontaneous Chiral Symmetry Breaking ◽  
Running Coupling

1D Mn(III) Coordination Polymers Exhibiting Chiral Symmetry Breaking and Weak Ferromagnetism

2021 ◽  
Author(s):  
Aoi Hara ◽  
Sotaro Kusumoto ◽  
Yoshihiro Sekine ◽  
Jack Harrowfield ◽  
Yang Kim ◽  
...  
Keyword(s):  
Symmetry Breaking ◽  
Chiral Symmetry ◽  
Coordination Polymers ◽  
Chiral Symmetry Breaking ◽  
Weak Ferromagnetism ◽  
Chiral Ligands ◽  
One Dimensional

Mn(III) complexes with the non-chiral ligands, (E)-N-(2-((2-aminobenzylidene)amino)-2-methylpropyl)-5-X-2-hydroxybenzamide (HLX, X = H, Cl, Br, and I), crystallise as chiral conglomerates containing amide oxygen-bridged one-dimensional coordination polymers that exhibit weak ferromagnetism. The...

scholarly journals Chiral Symmetry Breaking during Crystallization: An Advection-Mediated Nonlinear Autocatalytic Process

2004 ◽  
Vol 93 (3) ◽  
Author(s):  
Julyan H. E. Cartwright ◽  
Juan Manuel García-Ruiz ◽  
Oreste Piro ◽  
C. Ignacio Sainz-Díaz ◽  
Idan Tuval
Keyword(s):  
Symmetry Breaking ◽  
Chiral Symmetry ◽  
Chiral Symmetry Breaking ◽  
Autocatalytic Process

scholarly journals Chiral symmetry breaking beyond BCS and theorem on the width of scalars

2008 ◽  
Author(s):  
P. Bicudo ◽  
George Rupp ◽  
Eef van Beveren ◽  
Pedro Bicudo ◽  
Brigitte Hiller ◽  
...  
Keyword(s):  
Symmetry Breaking ◽  
Chiral Symmetry ◽  
Chiral Symmetry Breaking
Sign in / Sign up

Export Citation Format

Share Document