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Ostwald Ripening (coarsening)

3D Lattice Kinetic Monte Carlo Simulation

  • solubility scales with curvature (analogous to the Gibbs-Thomson equation); large particles grow at the expense of smaller ones (particle coarsening)

  • original paper: W. Ostwald, Z. Phys. Chem. 34 (1900) 495.

  • atomic dynamics is based on the conserved-order-parameter Ising model with nearest neighbor (NN) interaction JNN

  • f.c.c. lattice (12NNs; JNN/kTc = 0.40837)

  • here: JNN/kT = 1.3; Natoms = 7128; Ri = 12a (both clusters)

  • color key: coordination number from pink (monomers) to purple (12NNs)

  • time is measured in Monte Carlo steps (MCS)

  • simulation cell: (128a x 128a x 128a) with periodic boundaries

  • further information on Wilhelm Ostwald at [wikipedia].

  • Copyright: Lars Röntzsch, Dresden, GERMANY.