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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Paredes, José Shahidzadeh-Bonn, Noushine Bonn, Daniel |
| Description | Country affiliation: Netherlands Author Affiliation: Paredes J ( Van der Waals-Zeeman Institute, University of Amsterdam, Amsterdam, The Netherlands.) |
| Abstract | When made to flow, yield stress materials rarely flow homogeneously. This is mostly attributed to the fact that such materials show a transition from a solid- to a liquid-like state when the stress exceeds some critical value: the yield stress. Thus, if the stress is heterogeneous, so is the flow. Here we consider emulsion flows in a cone-plate geometry that, for Newtonian fluids, correspond to a homogeneous stress situation and show that shear banding can also be observed either due to wall slip or to the existence of a critical shear rate. By means of velocity profiles obtained using a confocal laser scanning microscope combined with a rheometer we conclude that the last type of shear banding occurs only in thixotropic yield stress materials. |
| ISSN | 09538984 |
| e-ISSN | 1361648X |
| Journal | Journal of Physics: Condensed Matter |
| Issue Number | 28 |
| Volume Number | 23 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 2011-07-20 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | Open |
| Subject Keyword | Rheology Stress, Mechanical Emulsions Phase Transition Viscosity Discipline Condensed Matter Physics |
| Content Type | Text |
| Resource Type | Article |
| Subject | Condensed Matter Physics Materials Science |
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