SKM 2023 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 44: Wetting, Fluidics and Liquids at Interfaces and Surfaces II (joint session CPP/DY)

CPP 44.12: Vortrag

Donnerstag, 30. März 2023, 12:30–12:45, MER 02

Asymmetric Sessile Compound Drops — •Jan Diekmann and Uwe Thiele — Westfälische Wilhelms-Universität, Münster, Germany

We consider compound drops of two immiscible liquids on a rigid solid substrate. Having established a mesoscopic model (amending [1]) consistent with the macroscopic description of [2,3], we show for one-dimensional (1D) substrates that asymmetric compound drops can be energetically favoured using continuation techniques. Furthermore, we investigate selected dewetting and coarsening processes and discuss emerging steady compound drops for two-dimensional (2D) substrates, thereby discussing the relation of 1D and 2D results.

[1] A. Pototsky et al., "Morphology changes in the evolution of liquid two-layer films". J. Chem. Phys. 122, 224711, 2005.

[2] L. Mahadevan, M. Adda-Bedia, and Y. Pomeau., "Four-phase merging in sessile compound drops". J. Fluid Mech. 451, 411-420, 2002.

[3] M. J. Neeson et al., "Compound sessile drops". Soft Matter 8, 11042-11050, 2012.