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001     187636
005     20240619092104.0
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|a Mamontov, E.
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245 _ _ |a Nanometer-sized dynamic entities in an aqueous system
260 _ _ |a Cambridge
|b RSC Publ.
|c 2015
336 7 _ |a Journal Article
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520 _ _ |a Using neutron spin-echo and backscattering spectroscopy, we have found that at low temperatures water molecules in an aqueous solution engage in center-of-mass dynamics that are different from both the main structural relaxations and the well-known localized motions in the transient cages of the nearest neighbor molecules. While the latter localized motions are known to take place on the picosecond time scale and Angstrom length scale, the slower motions that we have observed are found on the nanosecond time scale and nanometer length scale. They are associated with the slow secondary relaxations, or excess wing dynamics, in glass-forming liquids. Our approach, therefore, can be applied to probe the characteristic length scale of the dynamic entities associated with slow dynamics in glass-forming liquids, which presently cannot be studied by other experimental techniques.
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|a Zolnierczuk, P.
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|a Ohl, M.
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773 _ _ |0 PERI:(DE-600)1476244-4
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|g Vol. 17, no. 6, p. 4466 - 4471
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|t Physical chemistry, chemical physics
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