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Author
V. Chikkadi
D.M. Miedema
M.T. Dang
B. Nienhuis
P. Schall
Year
2014
Title
Shear banding of colloidal glasses: Observation of a dynamic first order transition
Journal
Physical Review Letters
Volume | Issue number
113 | 20
Pages (from-to)
208301
Number of pages
5
Document type
Article
Faculty
Faculty of Science (FNWI)
Institute
Van der Waals-Zeeman Institute (WZI)
Abstract
We demonstrate that application of an increasing shear field on a glass leads to an intriguing dynamic first-order transition in analogy with equilibrium transitions. By following the particle dynamics as a function of the driving field in a colloidal glass, we identify a critical shear rate upon which the diffusion time scale of the glass exhibits a sudden discontinuity. Using a new dynamic order parameter, we show that this discontinuity is analogous to a first-order transition, in which the applied stress acts as the conjugate field on the system’s dynamic evolution. These results offer new perspectives to comprehend the generic shear-banding instability of a wide range of amorphous materials.
URL
go to publisher's site
Language
English
Permalink
http://hdl.handle.net/11245/1.440845
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  • Shear banding of colloidal glasses

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