The Stokes-Einstein Relation in Supercooled Aqueous Solutions of Glycerol

Abstract

The diffusion of glycerol molecules decreases with decreasing temperature as its viscosity increases in a manner simply described by the Stokes-Einstein(SE) relation. Approaching the glass transition, this relation breaks down as it does with a number of other pure liquid glass formers. We have measured the diffusion coefficient for binary mixtures of glycerol and water and find that the Stokes-Einstein relation is restored with increasing water concentration. Our comparison with theory suggests that addition of water postpones the formation of frustration domains

4 Pages and 3 Figures

References in corpus (2)

• Excitation lines and the breakdown of Stokes-Einstein relations in supercooled liquids
• Hole-Burning Diffusion Measurements in High Magnetic Field Gradients

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