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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 J_NN

f.c.c. lattice (12 NNs; J_NN/kT_c = 0.40837)

here: J_NN/kT = 1.3; N_atoms = 7128; R_i = 12 a (both clusters)

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

time is measured in Monte Carlo steps (MCS)

simulation cell: (128 × 128 × 128) a³ with periodic boundaries

further information on Wilhelm Ostwald on Wikipedia

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Copyright: Dr. Lars Röntzsch, Dresden, GERMANY.