ArticleProceedings of the National Academy of Sciences of the United States of America2017
Probing large viscosities in glass-formers with nonequilibrium simulations.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed.
- Active learning for nonparametric multiscale modeling of boundary lubrication.Science advances · 2025Article
- Probing Rate-Dependent Liquid Shear Viscosity Using Combined Machine Learning and Nonequilibrium Molecular Dynamics.Journal of chemical theory and computation · 2025Article
- Structural Origin of Dynamic Heterogeneity in Supercooled Liquids.The journal of physical chemistry. B · 2025Review
- Comparison of Friction Parametrization from Dynamics and Material Properties for a Coarse-Grained Polymer Melt.The journal of physical chemistry. B · 2023Article
- Article
- Computing Viscosities of Mixtures of Ester-Based Lubricants at Different Temperatures.The journal of physical chemistry. B · 2023Article
- Effect of lubricants on the rotational transmission between solid-state gears.Beilstein journal of nanotechnology · 2022Article
- Density and viscosity of a polyol ester lubricant: Measurement and molecular dynamics simulation.Revue internationale du froid · 2020Article
- Purported fragile-to-Arrhenius crossover in squalane.Proceedings of the National Academy of Sciences of the United States of America · 2017Article
- Reply to Bair: Crossover to Arrhenius behavior at high viscosities in squalane.Proceedings of the National Academy of Sciences of the United States of America · 2017Article
Corrections and comments
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- Erratum issued
Authors and funding
2 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
For decades, scientists have debated whether supercooled liquids stop flowing below a glass transition temperature [Formula: see text] or whether motion continues to slow gradually down to zero temperature. Answering this question is challenging because human time scales set a limit on the largest measurable viscosity, and available data are equally well fit to models with opposite conclusions. Here, we use short simulations to determine the nonequilibrium shear response of a typical glass-former, squalane. Fits of the data to an Eyring model allow us to extrapolate predictions for the equilibrium Newtonian viscosity [Formula: see text] over a range of pressures and temperatures that change [Formula: see text] by 25 orders of magnitude. The results agree with the unusually large set of equilibrium and nonequilibrium experiments on squalane and extend them to higher [Formula: see text] Studies at different pressures and temperatures are inconsistent with a diverging viscosity at finite temperature. At all pressures, the predicted viscosity becomes Arrhenius with a single temperature-independent activation barrier at low temperatures and high viscosities ([Formula: see text] Pa[Formula: see text]s). Possible experimental tests of our results are outlined.
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