Suppression of the dynamic transition in surface water at low hydration levels: A study of water on rutile

Eugene Mamontov; Lukas Vlček; David J. Wesolowski; Peter T. Cummings; Jörgen Rosenqvist; Wei Wang; David R. Cole; Lawrence M. Anovitz; Goran Gasparovic

doi:10.1103/PhysRevE.79.051504

Suppression of the dynamic transition in surface water at low hydration levels: A study of water on rutile

Eugene Mamontov^*, Lukas Vlček, David J. Wesolowski, Peter T. Cummings, Jörgen Rosenqvist, Wei Wang, David R. Cole, Lawrence M. Anovitz, Goran Gasparovic

^*Corresponding author for this work

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

64 Citations (Scopus)

Abstract

Our quasielastic neutron-scattering experiments and molecular-dynamics simulations probing surface water on rutile (TiO2) have demonstrated that a sufficiently high hydration level is a prerequisite for the temperature- dependent crossover in the nanosecond dynamics of hydration water. Below the monolayer coverage of mobile surface water, a weak temperature dependence of the relaxation times with no apparent crossover is observed. We associate the dynamic crossover with interlayer jumps of the mobile water molecules, which become possible only at a sufficiently high hydration level.

Original language	English
Article number	051504
Journal	Physical Review E
Volume	79
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevE.79.051504
Publication status	Published - 22 May 2009

ASJC Scopus subject areas

Condensed Matter Physics
Statistical and Nonlinear Physics
Statistics and Probability

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abstract = "Our quasielastic neutron-scattering experiments and molecular-dynamics simulations probing surface water on rutile (TiO2) have demonstrated that a sufficiently high hydration level is a prerequisite for the temperature- dependent crossover in the nanosecond dynamics of hydration water. Below the monolayer coverage of mobile surface water, a weak temperature dependence of the relaxation times with no apparent crossover is observed. We associate the dynamic crossover with interlayer jumps of the mobile water molecules, which become possible only at a sufficiently high hydration level.",

author = "Eugene Mamontov and Lukas Vl{\v c}ek and Wesolowski, \{David J.\} and Cummings, \{Peter T.\} and J{\"o}rgen Rosenqvist and Wei Wang and Cole, \{David R.\} and Anovitz, \{Lawrence M.\} and Goran Gasparovic",

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AU - Mamontov, Eugene

AU - Vlček, Lukas

AU - Wesolowski, David J.

AU - Cummings, Peter T.

AU - Rosenqvist, Jörgen

AU - Wang, Wei

AU - Cole, David R.

AU - Anovitz, Lawrence M.

AU - Gasparovic, Goran

PY - 2009/5/22

Y1 - 2009/5/22

N2 - Our quasielastic neutron-scattering experiments and molecular-dynamics simulations probing surface water on rutile (TiO2) have demonstrated that a sufficiently high hydration level is a prerequisite for the temperature- dependent crossover in the nanosecond dynamics of hydration water. Below the monolayer coverage of mobile surface water, a weak temperature dependence of the relaxation times with no apparent crossover is observed. We associate the dynamic crossover with interlayer jumps of the mobile water molecules, which become possible only at a sufficiently high hydration level.

AB - Our quasielastic neutron-scattering experiments and molecular-dynamics simulations probing surface water on rutile (TiO2) have demonstrated that a sufficiently high hydration level is a prerequisite for the temperature- dependent crossover in the nanosecond dynamics of hydration water. Below the monolayer coverage of mobile surface water, a weak temperature dependence of the relaxation times with no apparent crossover is observed. We associate the dynamic crossover with interlayer jumps of the mobile water molecules, which become possible only at a sufficiently high hydration level.

UR - https://www.scopus.com/pages/publications/67549106823

U2 - 10.1103/PhysRevE.79.051504

DO - 10.1103/PhysRevE.79.051504

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M1 - 051504

ER -

Suppression of the dynamic transition in surface water at low hydration levels: A study of water on rutile

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