The SquareShoulderAsakuraOosawa model
Abstract
A new model for a colloidal sizeasymmetric binary mixture is proposed: The SquareShoulderAsakuraOosawa. This belongs to the larger class of nonadditive hardspheres models and has the property that its effective pair formulation is exact whenever the solvent particle fits inside the interstitial region of three touching solute particles. Therefore one can study its properties from the equivalent onecomponent effective problem. Some remarks on the phase diagram of this new model are also addressed.
 Publication:

Physica A Statistical Mechanics and its Applications
 Pub Date:
 September 2016
 DOI:
 10.1016/j.physa.2016.03.024
 arXiv:
 arXiv:1602.02354
 Bibcode:
 2016PhyA..457..406F
 Keywords:

 Collodal suspension;
 Sizeasymmetric nonadditive binary mixture;
 AsakuraOosawa;
 Squareshoulder;
 Effective potential;
 Phase diagram;
 Condensed Matter  Soft Condensed Matter;
 Condensed Matter  Mesoscale and Nanoscale Physics;
 Condensed Matter  Materials Science;
 Physics  Chemical Physics;
 Physics  Classical Physics
 EPrint:
 6 pages and 3 figures