Molecular dynamics study of the glass transition in confined water

Details Molecular dynamics study of the glass transition in confined water Molecular dynamics study of the glass transition in confined water

2000-02-29

arxiv.org/abs/cond-mat/0002455v1

J. Phys. IV France vol. 10, Pr7-203 (2000)

Physics

Condensed Matter

Statistical Mechanics

Talk presented at "International Workshop on Dynamics in Confinement", Grenoble January 2000, to be appear in J. Phys. France

Scientific paper

A molecular dynamics simulation of SPC/E water confined in a Silica pore is presented. The pore has been constructed to reproduce the average properties of a pore of Vycor glass. Due to the confinement and to the presence of a strong hydrophilic surface, the dynamic behaviour of the liquid appears to be strongly dependent on the hydration level. The approach to the glass transition of confined water is investigated on lowering hydration and on supercooling in the framework of Mode Coupling Theories. At higher hydrations two quite distinct subsets of water molecules are detectable. Those belonging to the first layer close to the substrate suffer a severe slowing down, while the remaining ones display a scenario typical of supercooled liquids approaching the kinetic glass transition.

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