Rheology of emulsions: is jamming a phase transition?
- Event time: 1:00pm
- Event date: 11th November 2013
- Speaker: Professor Daniel Bonn (The University of Amsterdam)
- Location: Room 2511, James Clerk Maxwell Building (JCMB) James Clerk Maxwell Building Peter Guthrie Tait Road Edinburgh EH9 3FD GB
I will discuss experiments on the rheology of emulsions with varying volume fraction of the dispersed phase. This allows us to show that the behaviors above and below the jamming point (random close packing) are related: the mechanical properties exhibit power-law scaling as a function of the distance to jamming, with exponent relations that relate the behavior above and below jamming. If time permits, I will also discuss the non-local rheology of the same systems, and give some puzzling results for the 'cooperativity length scale' that has been discussed at length for these systems.
This is a weekly series of informal talks given primarily by members of the soft condensed matter and statistical mechanics groups, but is also open to members of other groups and external visitors. The aim of the series is to promote discussion and learning of various topics at a level suitable to the broad background of the group. Everyone is welcome to attend..