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Quantitative Imaging of Concentrated Suspensions Under Flow

Research output: Chapter in Book/Report/Conference proceedingOther chapter contribution

Original languageEnglish
Title of host publicationHIGH SOLID DISPERSIONS
Place of PublicationBERLIN
PublisherSpringer-Verlag GmbH
Pages163-202
Number of pages40
DOIs
Publication statusPublished - 2010

Abstract

We review recent advances in imaging the flow of concentrated suspensions, focussing on the use of confocal microscopy to obtain time-resolved information on the single-particle level in these systems. After motivating the need for quantitative (confocal) imaging in suspension rheology, we briefly describe the particles, sample environments, microscopy tools and analysis algorithms needed to perform this kind of experiment. The second part of the review focusses on microscopic aspects of the flow of concentrated 'model' hard-sphere-like suspensions, and the relation to non-linear rheological phenomena such as yielding, shear localization, wall slip and shear-induced ordering. We describe both Brownian and non-Brownian systems and show how quantitative imaging can improve our understanding of the connection between microscopic dynamics and bulk flow.

    Research areas

  • Colloidal dispersion, Confocal imaging, Glass transition, Nonlinear rheology, NUCLEAR-MAGNETIC-RESONANCE, HARD-SPHERE SUSPENSIONS, PRESSURE-DRIVEN FLOW, SHEAR-INDUCED ORDER, MONODISPERSE SILICA SPHERES, DIGITAL VIDEO MICROSCOPY, SLOW VISCOUS FLOWS, COLLOIDAL GLASSES, COMPLEX FLUIDS, CONFOCAL MICROSCOPY

ID: 1274114