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, 98 (18), 185503

Surface Nucleation in the Freezing of Gold Nanoparticles


Surface Nucleation in the Freezing of Gold Nanoparticles

Eduardo Mendez-Villuendas et al. Phys Rev Lett.

Erratum in

  • Phys Rev Lett. 2007 Oct 12;99(15):159901


We use molecular simulation to calculate the nucleation free energy barrier for the freezing of a 456 atom gold cluster over a range of temperatures. The results show that the embryo of the solid cluster grows at the vapor-surface interface for all temperatures studied and that the usual classical nucleation model, with the embryo growing in the core of the cluster, is unable to predict the shape of the free energy barrier. We use a simple partial wetting model that treats the crystal as a lens-shaped nucleus at the liquid-vapor interface and find that the line tension plays an important role in the freezing of gold nanoparticles.

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