Non-exponential kinetic behavior of confined water

Details Non-exponential kinetic behavior of confined water Non-exponential kinetic behavior of confined water

1999-08-02

arxiv.org/abs/cond-mat/9908023v2

Europhys. Lett. vol. 49, p. 183 (2000)

Physics

Condensed Matter

Statistical Mechanics

Scientific paper

10.1209/epl/i2000-00132-1

We present the results of molecular dynamics simulations of SPC/E water confined in a realistic model of a silica pore. The single-particle dynamics have been studied at ambient temperature for different hydration levels. The confinement near the hydrophilic surface makes the dynamic behaviour of the liquid strongly dependent on the hydration level. Upon decrease of the number of water molecules in the pore we observe the onset of a slow dynamics due to the ``cage effect''. The conventional picture of a stochastic single-particle diffusion process thus looses its validity.

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