Crossref journal-article
Proceedings of the National Academy of Sciences
Proceedings of the National Academy of Sciences (341)
Abstract

By confining water in nanopores, so narrow that the liquid cannot freeze, it is possible to explore its properties well below its homogeneous nucleation temperature T H ≈ 235 K. In particular, the dynamical parameters of water can be measured down to 180 K, approaching the suggested glass transition temperature T g ≈ 165 K. Here we present experimental evidence, obtained from Nuclear Magnetic Resonance and Quasi-Elastic Neutron Scattering spectroscopies, of a well defined decoupling of transport properties (the self-diffusion coefficient and the average translational relaxation time), which implies the breakdown of the Stokes–Einstein relation. We further show that such a non-monotonic decoupling reflects the characteristics of the recently observed dynamic crossover, at ≈225 K, between the two dynamical behaviors known as fragile and strong, which is a consequence of a change in the hydrogen bond structure of liquid water.

Bibliography

Chen, S.-H., Mallamace, F., Mou, C.-Y., Broccio, M., Corsaro, C., Faraone, A., & Liu, L. (2006). The violation of the Stokes–Einstein relation in supercooled water. Proceedings of the National Academy of Sciences, 103(35), 12974–12978.

Authors 7
  1. Sow-Hsin Chen (first)
  2. Francesco Mallamace (additional)
  3. Chung-Yuan Mou (additional)
  4. Matteo Broccio (additional)
  5. Carmelo Corsaro (additional)
  6. Antonio Faraone (additional)
  7. Li Liu (additional)
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Dates
Type When
Created 19 years ago (Aug. 18, 2006, 8:34 p.m.)
Deposited 3 years, 4 months ago (April 12, 2022, 2:57 p.m.)
Indexed 2 weeks, 1 day ago (Aug. 6, 2025, 9:49 a.m.)
Issued 18 years, 11 months ago (Aug. 29, 2006)
Published 18 years, 11 months ago (Aug. 29, 2006)
Published Online 18 years, 11 months ago (Aug. 29, 2006)
Published Print 18 years, 11 months ago (Aug. 29, 2006)
Funders 0

None

@article{Chen_2006, title={The violation of the Stokes–Einstein relation in supercooled water}, volume={103}, ISSN={1091-6490}, url={http://dx.doi.org/10.1073/pnas.0603253103}, DOI={10.1073/pnas.0603253103}, number={35}, journal={Proceedings of the National Academy of Sciences}, publisher={Proceedings of the National Academy of Sciences}, author={Chen, Sow-Hsin and Mallamace, Francesco and Mou, Chung-Yuan and Broccio, Matteo and Corsaro, Carmelo and Faraone, Antonio and Liu, Li}, year={2006}, month=aug, pages={12974–12978} }