8th Liquid Matter Conference September 6-10, 2011 Wien, Austria ...

P7.76Thu 811:10-14:00Capillary wave analysis of crystal-liquid interface incolloidal model systemsAleksandar Mijailovic, 1 Roberto E. Rozas, 1 Juergen Horbach, 1 and HartmutLöwen 11 Theoretische Physik 2 HHU Düsseldorf, Universitätsstr. 1, 40225, Düsseldorf,GermanyThe properties of the crystal-liquid interface of inhomogeneous colloidal systems of particles interactingby the Yukawa potential is determined using molecular dynamic (MD) simulations. Theinteraction between the particles is modelled. The interfacial stiffness is calculated for the (100)crystal orientation using two independent methods: (1) from the spectrum of capillary waves at theinterface and (2) the interfacial broadening-effect predicted by the capillary wave theory [1, 2]. Acomplete mapping of the interfacial energy as a function of the crystal orientation is obtained fromthe spectrum of height-height correlation of the (100), (110) and (111) orientations.[1] R. E. Rozas and J. Horbach, Europhys. Lett. 93, 26006, (2011).[2] T. Zykova-Timan, J. Horbach, and K. Binder, J. Chem. Phys. 133, 014705, (2010)76