Shape changes in glasses due to surface flow

It has recently been suggested that at the surface of glasses there is a thin layer of material with finite viscosity that can flow even if the bulk is frozen. We address the observable consequences of this phenomenon on the time evolution of a given geometrical profile. The effects of surface flow...

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Bibliographic Details
Published in:Surface science 2000-09, Vol.464 (1), p.L686-L690
Main Authors: Jagla, E.A., Tosatti, E.
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Glass surfaces
Glasses (including metallic glasses)
Materials science
Phase transitions and critical phenomena
Physics
Solid surfaces and solid-solid interfaces
Specific materials
Surface diffusion
Surface melting
Surfaces and interfaces
thin films and whiskers (structure and nonelectronic properties)
Wetting
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Summary:It has recently been suggested that at the surface of glasses there is a thin layer of material with finite viscosity that can flow even if the bulk is frozen. We address the observable consequences of this phenomenon on the time evolution of a given geometrical profile. The effects of surface flow turn out to be quite different than those expected in the case of bulk flow. We suggest that surface flow of glasses near the glass transition is likely to be observable in ultra-centrifuge experiments.
ISSN:0039-6028
1879-2758
DOI:10.1016/S0039-6028(00)00692-0