Workshop - Scattering and Dynamics of Flowing Soft Material

Session

Early afternoon session - Colloids

10 Dec 2018, 13:30

Tera (Elite Hotel Ideon)

23. Keynote 1 - X-ray imaging of flowing concentrated suspensions

Dr Guillaume Overlez (CNRS, University of Bordeaux, France)

10/12/2018, 13:30

A key element to understand the rheological behavior of suspensions is their microstructure: the spatial distribution of particles depends on flow history, which has an impact on the suspension macroscopic properties. This appeals for the development of experimental tools allowing for the 3D imaging of particles in viscosimetric flows.
At a macroscopic scale, concentrated suspensions often...

24. Contr. Talk 1 - Sedimentation Induced Flow and Anomalous Dynamics in Field Driven Self-assembly of Magnetic Colloids Studied by XPCS

Antara Pal (Division of Physical Chemistry, Lund University)

10/12/2018, 14:10

We have studied the non-equilibrium dynamics of self-assembled magnetic peanut-shaped colloids in the presence of a magnetic field. The micrometre‐sized particles align in a direction perpendicular to the applied external magnetic field, and assemble into chains along the field direction. The anisotropic dynamics of these particles is investigated using multispeckle ultrasmall‐angle X‐ray...

25. Contr. Talk 2 - Orientation distributions of plate-like colloidal particles in complex flows – a synchrotron X-ray diffraction study

Adrian Rennie

10/12/2018, 14:30

Spatially resolved, X-ray diffraction with synchrotron radiation permits detailed maps of the alignment of crystalline colloidal particles to be deduced and compared with fluid mechanics calculations of the flow. The angular distribution of diffracted intensity from a given position in the pipe provides information about the orientation distribution of the particles. Orientational alignment in...

26. Keynote 2 - Scattering and microscopy probes in colloidal systems under shear: Linking structure and dynamics with mechanical response

Prof. George Petekidis (Materials science & Technology, University of Crete, Greece)

10/12/2018, 14:50

The microscopic structure and dynamics in colloidal systems at different length-scales, from single to multiple particle level, are probed under shear by a variety of scattering and direct imaging techniques. We present different studies of hard and soft particle glasses and attractive gels of spherical and rod-like colloids, where we link the mechanical response with the underlying particle...