TY  - CONF
AU  - Lettinga, M.P.
TI  - Probing microstructural origin of complex flow behaviour
M1  - FZJ-2017-00374
PY  - 2016
AB  - Soft matter materials are classically characterized by rheological experiments, which probe the mechanical response to shear flow. Knowledge of the microscopic structure in flow is crucial to understand, predict, and tune flow behaviour and therefore the macroscopic rheological response of complex fluids. A simple example of such fluids are dispersions of stiff particles, as alignment of the particles will cause a huge drop in the viscosity of the fluid. This ‘shear thinning’ can cause flow to be unstable, but it is yet unclear how this highly non-linear behaviour is linked to microscopic features such as the stiffness and dimensions of the particles. In this talk I will present  in situ time-resolved scattering [1-4] and microscopy experiments [5] on a variety of supramolecular polymers such as wormlike micelles, grafted-DNA, F-actin, and rod-like viruses. I will show how this (3-D)  structural information indeed discloses new mechanisms underlying non-linear macroscopic responses as well as the need of improvements in theory.
T2  - Group seminar at the Department of physics
CY  - 31 Oct 2016, TU Eindhoven (Netherlands)
Y2  - 31 Oct 2016
M2  - TU Eindhoven, Netherlands
LB  - PUB:(DE-HGF)31
UR  - https://juser.fz-juelich.de/record/826114
ER  -