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BP: Fachverband Biologische Physik

BP 44: Stochastic Dynamics of Growth Processes in Biological and Social Systems (accompanying session, joint DY/BP/SOE)

BP 44.6: Talk

Friday, April 4, 2014, 11:15–11:30, GÖR 226

Evolution of the size distribution of colloidal particles: focussing, breakdown of scaling, and asymptotic distributions — •Martin Rohloff^1,2 and Jürgen Vollmer^1,2 — ¹Max Planck Institute for Dynamics and Self-Organisation (MPIDS), 37077 Göttingen, Germany — ²Faculty of Physics, University of Göttingen, 37077 Göttingen, Germany

Mechanisms underlying the synthesis of mono-disperse colloids and nanocrystals are under vivid discussion. A common feature of the recipies is the growth of an assembly of particles subjected to a flux of material, provided e.g. by a chemical reaction like the decomposition of precurser.

We present analytical and numerical studies on diffusion dominated growth of particles with a constant overall volumetric growth rate. The resulting particle growth is qualitatively different from Ostwald ripening, and it leads to narrow and non-universal asymptotic size distributions.