A microscopic model of the Stokes-Einstein relation in arbitrary dimension
The Stokes-Einstein relation (SER) is one of the most robust and widely employed results from the theory of liquids. Yet sizable deviations can be observed for self-solvation, which cannot be explained by the standard hydrodynamic derivation. Here, we revisit the work of Masters and Madden [J. Chem....
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| Published in | The Journal of chemical physics Vol. 148; no. 22; p. 224503 |
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| Main Authors | , , |
| Format | Journal Article |
| Language | English |
| Published |
United States
14.06.2018
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| Online Access | Get more information |
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| Summary: | The Stokes-Einstein relation (SER) is one of the most robust and widely employed results from the theory of liquids. Yet sizable deviations can be observed for self-solvation, which cannot be explained by the standard hydrodynamic derivation. Here, we revisit the work of Masters and Madden [J. Chem. Phys. 74, 2450-2459 (1981)], who first solved a statistical mechanics model of the SER using the projection operator formalism. By generalizing their analysis to all spatial dimensions and to partially structured solvents, we identify a potential microscopic origin of some of these deviations. We also reproduce the SER-like result from the exact dynamics of infinite-dimensional fluids. |
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| ISSN: | 1089-7690 |
| DOI: | 10.1063/1.5029464 |