Dresden 2014 – wissenschaftliches Programm
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SOE: Fachverband Physik sozio-ökonomischer Systeme
SOE 23: Stochastic Dynamics of Growth Processes in Biological and Social Systems (session accompanying symposium SYGP, joint with DY and BP)
SOE 23.6: Vortrag
Freitag, 4. April 2014, 11:15–11:30, GÖR 226
Evolution of the size distribution of colloidal particles: focussing, breakdown of scaling, and asymptotic distributions — •Martin Rohloff1,2 and Jürgen Vollmer1,2 — 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.