Dresden 2017 – wissenschaftliches Programm
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DY: Fachverband Dynamik und Statistische Physik
DY 34: Colloids and Complex Fluids II (joint session BP/CPP/DY, organized by CPP)
DY 34.8: Vortrag
Mittwoch, 22. März 2017, 12:30–12:45, ZEU 260
Clusters in dipolar fluids — •Michela Ronti1, Alexey O. Ivanov2, Lorenzo Rovigatti3, Jose M. Tavares4, Francesco Sciortino5, and Sofia S. Kantorovich1,2 — 1Computational Physics, University of Vienna, Sensengasse 8, 1090 Vienna, Austria — 2Ural Federal University, 3 Ural Federal University, Lenin av. 51, Ekaterinburg, 620000, Russia — 3Rudolf Peierls Centre for Theoretical Physics, University of Oxford, 1 Keble Road, Oxford, OX1 4 NP, United Kingdom — 4Instituto Superior de Engenharia de Lisboa-ISEL, Rua Conselheiro Emidio Navarro 1, 1950-062 Lisboa, Portugal — 5University of Rome La Sapienza, Piazzale Aldo Moro 2, I-00185, Roma, Italy
We describe the self-assembly in magnetic nanocolloids by using a dipolar hard sphere (DHS) model. The phase diagram of this system at low temperature remains debatable regardless the expected simplicity of the model. At low temperature DHS particles self-assemble into complex structures, with primary structures composed by rings and chains. The latter form the building blocks for further aggregation. To elucidate the formation of branched structures analytically, we need to calculate accurately partition functions of various clusters. For that we introduce grand-canonical single cluster Monte Carlo simulations.