Regensburg 2010 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 37: Poster: Colloids and Complex Liquids

CPP 37.8: Poster

Mittwoch, 24. März 2010, 17:30–19:00, Poster B2

Colloidal suspensions of magnetic particles in time-dependent external fields — •Sebastian Jäger — Institut für Theoretische Physik, Technische Universität Berlin

We investigate colloidal suspensions of magnetic particles in 3 dimensions that interact with time-dependent external fields. The particles are modelled by dipolar soft spheres, whose dipolar coupling strength is such that it enables chain and cluster formation even if no external field is present. We choose the coupling of the dipoles with the external field to be even stronger than the dipole-dipole coupling strength. The states under scrutiny include low density dilute states as well as high density fluid states. Our methods include Molecular Dynamics simluations at fixed temperature and Brownian Dynamics simulations. In these simulations, we utilize the Ewald summation method to treat the long-range dipolar interactions.