Many-Body Electrostatic Forces Between Colloidal Particles at Vanishing Ionic Strength

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Jason W. Merrill, Sunil K. Sainis, and Eric R. Dufresne

Physical Review Letters 103 (2009) 138301

wiki entry by Emily Russell, Fall 2010

The article can be found here.

Overview and Comments

This paper reports a striking demonstration that effective pair potentials do not tell the full story in colloidal systems, and that furthermore, a constant surface potential is a better model than a constant surface charge, at least in some cases.