Regensburg 2022 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 46: Poster Session: Complex Fluids, Soft Matter, Active Matter, Glasses and Granular Materials

DY 46.14: Poster

Donnerstag, 8. September 2022, 15:00–18:00, P2

Electrophoretic mobility of liquid droplets — •Alexander Reinauer and Christian Holm — Institute for Computational Physics, Stuttgart, Germany

Electrophoresis of liquid droplets displays many complex phenomena with applications for phase separation and transport in biological systems. It is significantly more complex than particle electrophoresis due to the mobility of the surface charges as well as the non-rigid nature of the fluid-fluid interface. To investigate the different contributions we conduct a lattice Boltzmann (LB) simulation study of freely suspended liquid droplets under application of an external electric field. We use the Color-Gradient multicomponent LB extension which is coupled to a lattice electrokinetics model for dissolved charged chemical species. Our ongoing study intends to quantify the influence of the viscosity ratio, the salt concentration as well as the charge of the droplet on the measured electrophoretic mobility.