Dresden 2026 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 44: Poster: Active Matter, Soft Matter, and Fluids

DY 44.15: Poster

Mittwoch, 11. März 2026, 15:00–18:00, P5

Static and dynamic states of compound drops on heated substrates — •Dominik Thy, Jan Diekmann, and Uwe Thiele — Institute of Theoretical Physics, University of Münster, Wilhelm-Klemm-Str. 9, 48149 Münster, Germany

We present a mesoscopic thin-film model for interface dominated compound drops including a vertical temperature gradient [1]. Starting with established findings for the passive case, i.e., (isothermal) gradient dynamics that show relaxation to equilibrated compound drops of different configurations [2], we then drive the system out of equilibrium. To this end, we introduce a vertical temperature gradient that renders the system active by introducing thermal Marangoni flows. We discuss different static and dynamic states.

[1] Pototsky, Bestehorn, Merkt, Thiele. The Journal of Chemical Physics, 2005. doi: 10.1063/1.1927512.

[2] Diekmann, Thiele. Physical Review Fluids, 2025. doi: 10.1103/physrevfluids.10.024002.

Keywords: Compound drops; Mesoscopic hydrodynamics; Thermal Marangoni effect; Wettability