Open Conference Systems, DDAYS LAC 2024 Main Conference

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Localized dissipative vortices in chiral nematic liquid crystal cells
Marcel Clerc

Building: Cero Infinito
Room: 1401
Date: 2024-12-09 11:20 AM – 12:00 PM
Last modified: 2024-11-19

Abstract


Solitary waves and solitons have been fundamental in understanding nonlinear phenomena and emergent particle-type behaviors in out-of-equilibrium systems. This dynamic phenomenon has been essential to comprehending the behavior of fundamental particles and establishing the possibilities of novel technologies based on optical elements. Dissipative vortices are topological particle-type solutions in vectorial field out-of-equilibrium systems. Under homeotropic anchoring,chiral nematic liquid crystal cells are a natural habitat for localized vortices or spherulites. However, chiral bubble creation and destruction mechanisms and their respective bifurcation diagrams are unknown. In this talk, we propose a minimal two-dimensional model based on experimental observations of a temperature-triggered first-orderwinding/unwinding transition of a cholesteric liquid crystal cell and investigate this system experimentally. This model reveals the main ingredients for the emergence of chiral bubbles and theirinstabilities. Experimental observations have quite fair agreement with the theoretical results. Our findings are a starting point for understanding dissipative particles' existence, stability, and dynamical behaviors with topological properties.