Depletion force

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The depletion force is an entropic force arising from the excluded volume (and hence net entropy gain) in a binary colloidal solution.


  1. Sho Asakura and Fumio Oosawa "Surface Tension of High-Polymer Solutions", Journal of Chemical Physics 22 1255 (1954)
  2. Sho Asakura and Fumio Oosawa "Interaction between particles suspended in solutions of macromolecules", Journal of Polymer Science 33 pp. 183-192 (1958)
  3. Weihua Li, Tao Yang and Hong-ru Ma "Depletion potentials in colloidal mixtures of hard spheres and rods", Journal of Chemical Physics 128 044910 (2008)