Fluidity of Hydration Layers Nanoconfined between Mica Surfaces

Yongsheng Leng; Peter T. Cummings

doi:10.1103/PhysRevLett.94.026101

Fluidity of Hydration Layers Nanoconfined between Mica Surfaces

Yongsheng Leng^*
, Peter T. Cummings

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

204 Citations (Scopus)

Abstract

We perform molecular dynamics simulations to investigate the shear dynamics of hydration water nanoconfined between two mica surfaces at 1 bar pressure and 298 K. Newtonian plateaus of shear viscosity comparable to the bulk value for different hydration layers D = 0.92-2.44 nm are obtained. The origin of this persistent fluidity of the confined aqueous system is found to be closely associated with the rotational dynamics of water molecules, accompanied by fast translational diffusion under this confinement.

Original language	English
Article number	026101
Journal	Physical Review Letters
Volume	94
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevLett.94.026101
Publication status	Published - 21 Jan 2005

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.94.026101

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title = "Fluidity of Hydration Layers Nanoconfined between Mica Surfaces",

abstract = "We perform molecular dynamics simulations to investigate the shear dynamics of hydration water nanoconfined between two mica surfaces at 1 bar pressure and 298 K. Newtonian plateaus of shear viscosity comparable to the bulk value for different hydration layers D = 0.92-2.44 nm are obtained. The origin of this persistent fluidity of the confined aqueous system is found to be closely associated with the rotational dynamics of water molecules, accompanied by fast translational diffusion under this confinement.",

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N2 - We perform molecular dynamics simulations to investigate the shear dynamics of hydration water nanoconfined between two mica surfaces at 1 bar pressure and 298 K. Newtonian plateaus of shear viscosity comparable to the bulk value for different hydration layers D = 0.92-2.44 nm are obtained. The origin of this persistent fluidity of the confined aqueous system is found to be closely associated with the rotational dynamics of water molecules, accompanied by fast translational diffusion under this confinement.

AB - We perform molecular dynamics simulations to investigate the shear dynamics of hydration water nanoconfined between two mica surfaces at 1 bar pressure and 298 K. Newtonian plateaus of shear viscosity comparable to the bulk value for different hydration layers D = 0.92-2.44 nm are obtained. The origin of this persistent fluidity of the confined aqueous system is found to be closely associated with the rotational dynamics of water molecules, accompanied by fast translational diffusion under this confinement.

UR - https://www.scopus.com/pages/publications/18144370104

U2 - 10.1103/PhysRevLett.94.026101

DO - 10.1103/PhysRevLett.94.026101

M3 - Article

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SN - 0031-9007

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JO - Physical Review Letters

JF - Physical Review Letters

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Fluidity of Hydration Layers Nanoconfined between Mica Surfaces

Abstract

ASJC Scopus subject areas

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