Chiral Structures from Achiral Micellar Lyotropic Liquid Crystals under Capillary Confinement

Langmuir : the ACS Journal of Surfaces and Colloids
Clarissa F DietrichFrank Giesselmann

Abstract

Recently, the emergence of spontaneous reflection-symmetry-broken configurations in achiral chromonic liquid crystals confined in cylindrical capillaries with homeotropic anchoring at the cylinder walls was reported, namely, the so-called twisted-escaped radial (TER) and twisted planar polar (TPP) configurations. This new example of spontaneous reflection symmetry breaking in liquid crystals was attributed to the twist elastic modulus, which is known to be unusually small in comparison to the splay and bend moduli in the case of chromonic liquid crystals. We now report the experimental observation of reflection symmetry breaking in cylindrical capillaries in the case of a classical, achiral, and nonchromonic lyotropic liquid crystal forming a nematic phase of disklike micelles orienting homeotropically at the capillary walls. We observed the same chiral TER configuration, as well as a nonplanar twisted polar (TP) configuration. The TP configuration is characterized by two half-unit so-called twist disclinations, where the director twist around the line defects drives the formation of a double helix of the disclinations along the axis of the capillary. Additionally, there is a transverse twist between the two disclination lines ...Continue Reading

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Citations

Feb 27, 2018·Physical Review Letters·Kathrin SentkerPatrick Huber
Jul 7, 2020·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Suitu WangTaylor H Ware
Oct 18, 2020·Proceedings of the National Academy of Sciences of the United States of America·Clarissa F DietrichFrank Giesselmann
Dec 12, 2020·Soft Matter·Amir JangizehiSebastian Seiffert
Dec 17, 2020·Soft Matter·Jordan K Ando, Peter J Collings
Feb 13, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Clarissa F DietrichFrank Giesselmann
Sep 1, 2018·Journal of the American Chemical Society·Johannes SeibelSteven De Feyter

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