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Monte Carlo test of the classical theory for heterogeneous nucleation

Date: 19.04.2010
Place: UHW 11/1102 4:00 p.m.

P. Virnau, Institut für Physik, Johannes Gutenberg-Universität Mainz, Gau-Algesheim, Germany

Flat walls facilitate the condensation of a supersaturated vapor: classical theory of heterogeneous nucleation predicts that the free energy barrier ΔF*het, which needs to be overcome for the formation of sphere-cap-shaped nucleation seeds, is smaller than the barrier ΔF*hom for spherical droplets in the bulk by a factor 0 *hom and ΔF*het from Monte Carlo simulations and test the theory for the lattice gas model (for which Θ can be readily controlled). Even though the theory is only based on macroscopic arguments, it is shown to hold for experimentally relevant nanoscopic nucleation seeds (20 ≤ ΔF /kBT ≤ 200) if line tension effects are considered. If time allows I will also present recent work on ”knotted proteins”.

The seminar takes place on Monday, 19th of April, at 4:00 p.m. in the ICAMS Seminar room UHW 11/1102, Stiepeler Straße 129.

For more information contact Dr. Bernhard Eidel, bernhard.eidel@rub.de

Download Abstract:

Seminar_Virnau_19042010.pdf
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