Projects per year
Abstract / Description of output
We study the flow of concentrated hard-sphere colloidal suspensions along smooth, nonstick walls using cone-plate rheometry and simultaneous confocal microscopy. In the glass regime, the global flow shows a transition from Herschel-Bulkley behavior at large shear rate to a characteristic Bingham slip response at small rates, absent for ergodic colloidal fluids. Imaging reveals both the "solid" microstructure during full slip and the local nature of the "slip to shear" transition. Both the local and global flow are described by a phenomenological model, and the associated Bingham slip parameters exhibit characteristic scaling with size and concentration of the hard spheres.
Original language | English |
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Article number | 258301 |
Pages (from-to) | - |
Number of pages | 4 |
Journal | Physical Review Letters |
Volume | 101 |
Issue number | 25 |
DOIs | |
Publication status | Published - 19 Dec 2008 |
Keywords / Materials (for Non-textual outputs)
- DYNAMIC LIGHT-SCATTERING
- SHEARED COMPLEX FLUIDS
- WALL-SLIP
- CONCENTRATED SUSPENSIONS
- RHEOLOGY
- EMULSIONS
- PARALLEL
- VISCOMETERS
- VELOCIMETRY
- PARTICLES
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Dive into the research topics of 'Slip and Flow of Hard-Sphere Colloidal Glasses'. Together they form a unique fingerprint.Projects
- 1 Finished
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Edinbugrh Soft Matter and Statistical Physics Programme Grant Renewal
Cates, M., Poon, W., Ackland, G., Clegg, P., Evans, M., MacPhee, C. & Marenduzzo, D.
1/10/07 → 31/03/12
Project: Research