Hydration-dependent dynamics of deeply cooled water under strong confinement

Author(s)
Bertrand, Christopher E.; Liu, K.-H.; Mamontov, Eugene; Chen, Sow-Hsin
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Abstract
We have measured the hydration-level dependence of the single-particle dynamics of water confined in the ordered mesoporous silica MCM-41. The dynamic crossover observed at full hydration is absent at monolayer hydration. The monolayer dynamics are significantly slower than those of water in a fully hydrated pore at ambient temperatures. At low temperatures, the opposite is found to be true. These results underscore the importance of water's tetrahedral hydrogen-bond network in accounting for its low temperature dynamic properties.
Date issued
2013-04
URI
http://hdl.handle.net/1721.1/89038
Department
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Journal
Physical Review E
Publisher
American Physical Society
Citation
Bertrand, C. E., K.-H. Liu, E. Mamontov, and S.-H. Chen. “Hydration-Dependent Dynamics of Deeply Cooled Water Under Strong Confinement.” Phys. Rev. E 87, no. 4 (April 2013). © 2013 American Physical Society
Version: Final published version
ISSN
1539-3755
1550-2376
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