Note: Stokes-Einstein relation without hydrodynamic diameter in the TIP4P/Ice water model
Sergay Khrapak, Alexey Khrapak
TL;DR
This paper shows that in the TIP4P/Ice water model, the self-diffusion and shear viscosity data satisfy a microscopic form of the Stokes-Einstein relation without needing the hydrodynamic diameter, challenging traditional assumptions.
Contribution
It demonstrates that the microscopic Stokes-Einstein relation holds in the TIP4P/Ice water model without involving the hydrodynamic diameter, providing new insights into molecular diffusion.
Findings
Self-diffusion and shear viscosity data obey the microscopic Stokes-Einstein relation.
The relation holds without the hydrodynamic diameter in the TIP4P/Ice model.
Challenges traditional hydrodynamic assumptions in water modeling.
Abstract
It is demonstrated that self-diffusion and shear viscosity data for the TIP4P/Ice water model reported recently [L. Baran, W. Rzysko and L. MacDowell, J. Chem. Phys. {\bf 158}, 064503 (2023)] obey the microscopic version of the Stokes-Einstein relation without the hydrodynamic diameter.
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