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1 August 2021 Formation of cholesteric labyrinths: theory and experiments
Sebastian Echeverria-Alar, Marcel G. Clerc, Gregorio González-Cortés
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Proceedings Volume 11807, Liquid Crystals XXV; 1180717 (2021) https://doi.org/10.1117/12.2594678
Event: SPIE Organic Photonics + Electronics, 2021, San Diego, California, United States
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Abstract
Cholesteric liquid crystals have attracted the scientific community's attention in the last decades due to the impressive textures displayed in various experiments. In particular, when varying the temperature of a cholesteric liquid crystal sample with homeotropic anchoring, complex textures arise, which resemble labyrinthine patterns built on the connections of the so-called cholesteric fingers. Near the winding/unwinding transition, we proposed a minimal phenomenological model that accounts for the first-order type transition and the symmetries in the system. At this transition, localized cholesteric fingers suffer a tip-splitting instability and the merging of pointed tips. We discuss the emergence of cholesteric labyrinths using experimental, analytical, and numerical techniques.
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Sebastian Echeverria-Alar, Marcel G. Clerc, and Gregorio González-Cortés "Formation of cholesteric labyrinths: theory and experiments", Proc. SPIE 11807, Liquid Crystals XXV, 1180717 (1 August 2021); https://doi.org/10.1117/12.2594678
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KEYWORDS
Liquid crystals
Polarization
Thermal modeling
Numerical simulations
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