Dresden 2011 – scientific programme
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 38: Poster: Colloids and Complex Liquids
CPP 38.36: Poster
Wednesday, March 16, 2011, 17:00–19:00, P2
Influence of an external magnetic field on a ferrofluid with chain aggregates — •Elena Pyanzina1, Joan Cerda2, Sofia Kantorovich1,3, and Christian Holm3 — 1Ural State University, Lenin av. 51, Ekaterinburg, 620000, Russia — 2Institute for Cross-Disciplinary Physics and Complex System, Campus Universitat de les Illes Balears, 07122, Palma de Mallorca — 3Institute fuer Computerphysik, Universitaet Stuttgart, Pfaffenwaldring 27, 70569, Stuttgart, Deutschland
We present the analysis of the influence of an external magnetic field on the ferrofluids with intensive interparticle magnetic dipole-dipole interaction. We investigate the structure factor of such systems by means of molecular dynamic simulations and theoretical modeling. In this study we focus on monodisperse systems, i.e. all particles are identical. The theoretical calculations are based on the explicit construction of radial distribution functions from the chain distributions in the presence of an external magnetic field obtained via density functional minimization. Molecular dynamic computer simulation are provided for the verification of the model and for elucidation of the connection between the scattering pattern and the system microstructure.