Correlation of the scaling exponent gamma of the diffusivity-density function in viscous liquids with their elastic properties.
Fundamental thermodynamical concepts and a solid-state point defect elastic model are used to formulate a diffusivity-density scaling function for viscous liquids. It is proved in a straightforward manner that the scaling exponent gamma describing the density scaling of the diffusivity is related with the pressure derivative of the isothermal bulk modulus.
Papathanassiou
Anthony N
AN
Department of Physics, Solid State Physics Section, University of Athens, Panepistimiopolis, 15784 Zografos, Athens, Greece. antpapa@phys.uoa.gr
Sakellis
Ilias
I