Journal
PHYSICAL REVIEW LETTERS
Volume 103, Issue 24, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.103.245902
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Funding
- U. S. Department of Energy Office of Basic Energy Sciences
- Division of Chemical Sciences, Geosciences, and Biosciences
- DOE's Office of Biological and Environmental Research and located at PNNL
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The permeation of rare-gas atoms through deeply supercooled metastable liquid methanol films is used to probe the diffusivity. The technique allows for measurement of supercooled liquid mobility at temperatures near the glass transition. The temperature dependence of the diffusivity is well described by a Vogel-Fulcher-Tamman equation. These new measurements and the temperature dependent kinetic parameters obtained from their analysis provide clear evidence that methanol is a fragile liquid near the glass transition.
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