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Gelbart's early research in 1970-80

Since 1975, Gelbart and his co-workers at UCLA continued to research on the statistical mechanics and bulk properties of liquids, aqueous solutions and materials1. In the late 1970s, he spent most of his time and efforts to extending a generalized version of Van der Waals theory to fluids of anisotropic molecules. Interaction with angle-dependent potentials to the fluids of anisotropic molecules provided insight into the orientational order of nematic phases of liquid crystals2. In the meantime, he developed y-expansion, a new representation of pressure equations for hard-particle fluids. These equations are extremely useful for accurate predictions of the orientational-ordering phase transition. The interaction of repulsive particles with arbitrary shape is required to analyze the phase transitions. In 1980, Bill first began to think of the phenomena of the amphiphilic molecules when they self-assemble in aqueous phase.

[1] Ben-Shaul,A. et al. William M. Gelbart: An Appreciation. Journal of Physical Chemistry. 2016, 120, 5788−5789.

[2] William M. Gelbart and Barbara A. Baron: Generalized van der Waals theory of the isotropic-nematic phase transition. The Journal of Chemical Physics. 1977, 66, 207