title: Universal scaling laws of diffusion in a binary fluid mixture.
abstract: A new universal scaling law relating the self-diffusivities of a binary fluid mixture and the excess entropies of its components is derived using mode coupling theory, reproducing the empirical scaling laws of Dzugutov [Nature (London) 381, 137 (1996)] and Hoyt et al. [Phys. Rev. Lett. 85, 594 (2000)] as special cases. The derived scaling laws are tested through numerical calculations for binary Lennard-Jones fluid mixtures for a wide range of physical parameters, and a very good correlation is observed. We have also arrived at a new universal scaling relationship between the cross-diffusivity and entropy for the first time.
authors.affiliation: Theoretical Chemistry Section, RC & CD Division, Chemistry Group, Bhabha Atomic Research Centre, Mumbai 400 085, India.
authors.forename: A
authors.initials: A
authors.lastname: Samanta
authors.forename: S M
authors.initials: SM
authors.lastname: Ali
authors.forename: S K
authors.initials: SK
authors.lastname: Ghosh