Nonclassical Properties of Molecular Diffusion in Liquids and Dense Gases
The diffusion of molecules in liquids and dense gases is demonstrated to be nonclassical for long time intervals. This means that the time dependence of the mean-square displacement of molecules is nonlinear. This result was obtained by molecular dynamics simulations over a wide range of density of the medium. The problem of plateau values of the diffusion coefficient is discussed. Nonclassical diffusion equations are derived and discussed.
Andreas Öchsner and Graeme E. Murch
V. Rudyak and A.A. Belkin, "Nonclassical Properties of Molecular Diffusion in Liquids and Dense Gases ", Defect and Diffusion Forum, Vols. 273-276, pp. 560-565, 2008