Berlin 2008 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 12: Confined Fluids

CPP 12.4: Vortrag

Dienstag, 26. Februar 2008, 11:45–12:00, C 230

Statics and dynamics of confined cluster forming systems — •Sven van Teeffelen and Christos N. Likos — Institut für Theoretische Physik II, Heinrich–Heine–Universität Düsseldorf, Universitätsstrasse 1, D-40225 Düsseldorf, Germany

Ultrasoft repulsive particles are known to crystallize into BCC and FCC cluster crystals [1,2]. Here, we study with the help of accurate density functional theory how a system of ultrasoft repulsive particles, such as dendrimers, behaves under planar confinement.

In particular, we present the phase diagram and we show how the emerging equilibrium fluid and crystal structures differ from those in the bulk. Extending our considerations to non-equilibrium phenomena, we employ a Dynamical Density Functional Theory (DDFT) to examine the growth or loss of local crystallinity in confinement, induced by compression or expansion of the confinining walls.

[1] B. Mladek, et. al., Phys. Rev. Lett. 96, 045701 (2006)

[2] M. A. Glaser, et. al., Europhys. Lett. 78, 46004 (2007)