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The Stokes-Einstein Relation in Supercooled Aqueous Solutions of Glycerol

Bo Chen·Eric E. Sigmund·W. P. Halperin
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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

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Bo Chen, Eric E. Sigmund, W. P. Halperin. 2006-11-20. The Stokes-Einstein Relation in Supercooled Aqueous Solutions of Glycerol. https://doi.org/10.1103/physrevlett.96.145502

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