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Lattice Boltzmann and Jones matrix calculations for the determination of the director field structure in self-propelling nematic droplets

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Bahr,  Christian
Group Structure formation in soft matter, Department of Dynamics of Complex Fluids, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

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Citation

Bahr, C. (in press). Lattice Boltzmann and Jones matrix calculations for the determination of the director field structure in self-propelling nematic droplets. Physical Review E, (accepted).


Cite as: https://hdl.handle.net/21.11116/0000-0009-4244-0
Abstract
Nematic droplets immersed in aqueous surfactant solutions can show a self-propelled motion induced by a Marangoni flow in the droplet surface. In addition to the self-propulsion, the Marangoni flow induces within the droplet a convective flow wich considerably influences the nematic director field of the droplet. We report numerical simulations aiming at the determination of the director field in the self-propelling droplet. The convective flow and the resulting structure of director field are described by a lattice Boltzmann model. The reliability of the obtained structures is proved by subsequent Jones matrix calculations which enable the direct comparison of experimental polarizing microscopy images of self-propelling droplets with calculated images based on the simulated structures.