Berlin 2015 – scientific programme

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 13: Focus: Field Controllable Functional Polymers II

CPP 13.6: Talk

Monday, March 16, 2015, 16:30–16:45, C 264

Influence of the dipole moment orientation inside particles on the macroscopic behaviour of magnetic ellipsoids systems — Anna Gudkova and •Elena Pyanzina — Ural Federal University, Lenin av. 51, Ekaterinburg, 620000, Russia

Magnetic anisotropic particles in the last years became an independent fast-emerging branch of dipolar soft matter research. In this contribution we focus our attention on the magnetic ellipsoids, which have the orientation-dependent steric interparticle interaction. The magnetic part of the interaction will be characterized by simple magnetic dipole-dipole interaction, with the dipole moment being always fixed in the particle's centre of mass, but with different orientation (along/perpendicular to the main axis). The theoretical study and results of computer simulations for microstructure and magnetic, rheological and structural properties for the systems with different dipole orientation and particle anisotropy are presented. It was shown that all aforementioned characteristics strongly depend on the particle anisotropy and the dipole orientation as well as external magnetic field. As a result one can drastically change macroscopic responses of the systems. This may prove to be very important in various medical and industrial applications, where a bottom up design of materials plays a crucial part.