- Author
- 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
- Downloads
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