The violation of the Stokes-Einstein relation in supercooled water

Sow Hsin Chen, Francesco Mallamace, Chung Yuan Mou, Matteo Broccio, Carmelo Corsaro, Antonio Faraone, Li Liu

Research output: Contribution to journalArticlepeer-review

284 Citations (Scopus)


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 TH ≈ 235 K. In particular, the dynamical parameters of water can be measured down to 180 K, approaching the suggested glass transition temperature Tg ≈ 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.

Original languageEnglish
Pages (from-to)12974-12978
Number of pages5
JournalProceedings of the National Academy of Sciences of the United States of America
Issue number35
Publication statusPublished - Aug 29 2006
Externally publishedYes


  • Decoupling of transport properties
  • Dynamic crossover
  • MCM-41

ASJC Scopus subject areas

  • General


Dive into the research topics of 'The violation of the Stokes-Einstein relation in supercooled water'. Together they form a unique fingerprint.

Cite this