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DY: Fachverband Dynamik und Statistische Physik

DY 55: Poster: Turbulence; Complex Fluids; Microfluidics; Droplets and Wetting

DY 55.5: Poster

Donnerstag, 19. März 2020, 15:00–18:00, P1A

Droplet evaporation/condensation in the lattice gas — •Manuel Maeritz — Universität Tübingen, Institut für Angewandte Physik

We investigate the droplet evaporation/condensation of the lattice gas in two and three dimensions within the framework of density functional theory. First, we construct improved free energy functionals by mapping the lattice gas to the Asakura-Oosawa model and formulate a functional using a suggestion by Cuesta et al. (Highlander functional) [1]. Comparison to standard mean-field results shows a clear improvement of the phase diagram. Second, we apply the functional to droplets in finite boxes and extract droplet surface tensions. A comparison to recent simulation results by Tröster et al. is given [2].

[1] J. Cuesta, L. Lafuente and M. Schmidt, Phys. Rev. E 72, 031405 (2005).

[2] A. Tröster, F. Schmitz, P. Virnau, K. Binder, J. Phys. Chem. B 122, 3407-3417 (2018).