Collective diffusion model for water permeation through microscopic channels - PubMed (original) (raw)

. 2004 Nov 26;93(22):224501.

doi: 10.1103/PhysRevLett.93.224501. Epub 2004 Nov 24.

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Collective diffusion model for water permeation through microscopic channels

Fangqiang Zhu et al. Phys Rev Lett. 2004.

Abstract

Water permeation through nanometric channels, generally a coupled many-body process, is described in this study by a single collective coordinate. A collective diffusion model is proposed in which water movement at equilibrium is characterized as an unbiased diffusion along this coordinate and water transport in the presence of a chemical potential difference is described as one-dimensional diffusion in a linear potential. The model allows one to determine the osmotic permeability of a water channel from equilibrium simulations.

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