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Hidden Slow Dynamics in Water

Helén Jansson (Institutionen för teknisk fysik, Kondenserade materiens fysik) ; Rikard Bergman (Institutionen för teknisk fysik, Kondenserade materiens fysik) ; Jan Swenson (Institutionen för teknisk fysik, Kondenserade materiens fysik)
Physical Review Letters (0031-9007). Vol. 104 (2010), 1,
[Artikel, refereegranskad vetenskaplig]

It is well known that the structural and dynamical properties of water are of central importance for life on our planet. However, despite this knowledge its structural and dynamical properties are still far from fully understood. In this Letter we show for the first time that water exhibits an anomalously slow relaxation process, which is about 4 orders of magnitude slower than the viscosity-related structural main relaxation. This slow Debye-like process has previously only been observed in monoalcohols and more recently also in polyalcohols, and due to its slowness it is generally believed to be caused by some kind of collective motion of hydrogen-bonded structures. The new finding has important structural and dynamical implications for water.

Nyckelord: glass-forming liquids, dielectric-relaxation, monohydroxy alcohols, room-temperature, rich mixtures, behavior, 1-propanol, clusters



Denna post skapades 2010-02-15. Senast ändrad 2015-03-06.
CPL Pubid: 112178

 

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Institutioner (Chalmers)

Institutionen för teknisk fysik, Kondenserade materiens fysik (1900-2015)

Ämnesområden

Den kondenserade materiens fysik

Chalmers infrastruktur