Khrapak S, Khrapak A. Stokes-Einstein Relation in Different Models of Water.
Molecules 2024;
29:5587. [PMID:
39683746 DOI:
10.3390/molecules29235587]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2024] [Revised: 11/14/2024] [Accepted: 11/18/2024] [Indexed: 12/18/2024] Open
Abstract
The purpose of this paper is to discuss to which extent a microscopic version of the Stokes-Einstein (SE) relation without the hydrodynamic radius applies to liquid water. We demonstrate that the self-diffusion and shear viscosity data for five popular water models, recently reported by Ando [J. Chem. Phys. 159, 101102 (2023)], are in excellent agreement with the SE relation. The agreement with experimental results is also quite impressive. The limitations on the applicability of the SE relation are briefly discussed.
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