Viscous water meniscus under nanoconfinement

R. C. Major; J. E. Houston; M. J. McGrath; J. I. Siepmann; X. Y. Zhu

doi:10.1103/PhysRevLett.96.177803

Viscous water meniscus under nanoconfinement

R. C. Major, J. E. Houston, M. J. McGrath, J. I. Siepmann, X. Y. Zhu

Chemistry (Twin Cities)

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179 Scopus citations

Abstract

A dramatic transition in the mechanical properties of water is observed at the nanometer scale. For a water meniscus formed between two hydrophilic surfaces in the attractive region, with ≤1nm interfacial separation, the measured viscosity is 7 orders of magnitude greater than that of bulk water at room temperature. Grand canonical Monte Carlo simulations reveal enhancement in the tetrahedral structure and in the number of hydrogen bonds to the surfaces as a source for the high viscosity; this results from a cooperative effect of hydrogen bonding of water molecules to both hydrophilic surfaces.

Original language	English (US)
Article number	177803
Journal	Physical review letters
Volume	96
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevLett.96.177803
State	Published - 2006

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10.1103/PhysRevLett.96.177803

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AU - Houston, J. E.

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AU - Siepmann, J. I.

AU - Zhu, X. Y.

PY - 2006

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AB - A dramatic transition in the mechanical properties of water is observed at the nanometer scale. For a water meniscus formed between two hydrophilic surfaces in the attractive region, with ≤1nm interfacial separation, the measured viscosity is 7 orders of magnitude greater than that of bulk water at room temperature. Grand canonical Monte Carlo simulations reveal enhancement in the tetrahedral structure and in the number of hydrogen bonds to the surfaces as a source for the high viscosity; this results from a cooperative effect of hydrogen bonding of water molecules to both hydrophilic surfaces.

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Viscous water meniscus under nanoconfinement

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