Regensburg 2010 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 13: Poster: Crystallization and Self Assembly

CPP 13.7: Poster

Montag, 22. März 2010, 16:30–18:00, Poster C

Crystallisation in attractive colloidal Hard Spheres — •Richard Beyer, Sara Iacopini, Thomas Palberg, and Hans Joachim Schöpe — Johannes Gutenberg-Universität Mainz, Institut für Physik, Staudinger Weg 7, 55099 Mainz, Germany

We study the crystallization kinetics of a mixture of colloidal "hard-sphere" particles and non-adsorbing polymer, in which the polymer induces a "depletion" attraction between the particles. With increasing amount of added polymer the early stages of the crystallization process are modified significantly and the crystallization process is delayed. We observe obvious deviations from a pure rhcp structure factor and a modification in the time trace and of the absolute values of the nucleation rate density.