Quantum effects in dynamics of water and other liquids of light molecules

. Nuclear quantum effects in atomic motions are well known at low temperatures T < 10 K, but analyses of structural relaxation in liquids and description of the glass transition traditionally neglect quantum effects at higher temperatures, T > 50 - 100 K. Recent studies, however, suggested tha...

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Bibliographic Details
Published in:The European physical journal. E, Soft matter and biological physics Soft matter and biological physics, 2017-05, Vol.40 (5), p.57-15, Article 57
Main Authors: Novikov, V. N., Sokolov, A. P.
Format: Article
Language:English
Subjects:
Ambient temperature
Biological and Medical Physics
Biophysics
Colloquium
Complex Fluids and Microfluidics
Complex Systems
Condensed matter physics
Dynamic structural analysis
Glass transition temperature
Liquids
Low temperature
Nanotechnology
Physics
Physics and Astronomy
Polymer Sciences
Relaxation time
Soft and Granular Matter
Surfaces and Interfaces
Thin Films
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Summary:. Nuclear quantum effects in atomic motions are well known at low temperatures T < 10 K, but analyses of structural relaxation in liquids and description of the glass transition traditionally neglect quantum effects at higher temperatures, T > 50 - 100 K. Recent studies, however, suggested that nuclear quantum effects in systems of light molecules ( e.g. , water) might play an important role in structural dynamics and provide non-negligible contributions at such temperatures, and even up to ambient temperature. In this article, we discuss experimental evidences of the quantum effects in glass transition in liquids of light molecules and possible theoretical descriptions of these effects. We show that quantum effects may qualitatively change the temperature behavior of the structural relaxation time in supercooled liquids leading to deviations of some well-established properties of the glass transition when it happens at low temperatures. We also demonstrate that unusual behavior of water dynamics at low temperatures, including apparent fragile-to-strong crossover, can be ascribed to nuclear quantum effects. Graphical abstract
ISSN:1292-8941
1292-895X
DOI:10.1140/epje/i2017-11546-0