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Suppression of the dynamic transition in surface water at low hydration levels: a study of water on rutile.
- Source :
-
Physical review. E, Statistical, nonlinear, and soft matter physics [Phys Rev E Stat Nonlin Soft Matter Phys] 2009 May; Vol. 79 (5 Pt 1), pp. 051504. Date of Electronic Publication: 2009 May 22. - Publication Year :
- 2009
-
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.
Details
- Language :
- English
- ISSN :
- 1539-3755
- Volume :
- 79
- Issue :
- 5 Pt 1
- Database :
- MEDLINE
- Journal :
- Physical review. E, Statistical, nonlinear, and soft matter physics
- Publication Type :
- Academic Journal
- Accession number :
- 19518459
- Full Text :
- https://doi.org/10.1103/PhysRevE.79.051504