Complex fluid-fluid interfaces : rheology, structure and opportunities for engineering materials

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Date 16.03.2015
Hour 13:1514:15
Speaker Prof. Jan Vermant, ETH Zürich
Location
Category Conferences - Seminars
Complex fluid-fluid interfaces are common to living systems, foods, personal products, and the environment. They occur where ever surface active molecules and particles collect at fluid interfaces and render them non-linear in their response to flow and deformation. When this occurs, the interfaces acquire a complex microstructure that must be interrogated. Interfacial rheological material properties must be measured to appreciate their role in such varied processes as lung function, cell division, and foam and emulsion stability. Interfacial rheological characterization relies on the development of tools with the sensitivity to respond to small surface stresses in a way that isolates them from bulk stresses. But also methods to engineer interfacial responses differ from the usual strategies in Bulk. We will see some examples of unique ways to structure interfaces and create new materials.

references:

(1) Gerald G. Fuller and Jan Vermant, Complex Fluid-Fluid Interfaces: Rheology and Structure  Annual Review of Chemical and Biomolecular Engineering, Volume: 3   Pages: 519-543  (2012).
(2) Imperiali, Luna, Clasen, Christian, Fransaer, Jan, Macosko, Christopher W., Vermant, Jan.
A Simple Route to Graphene Oxide Frameworks.  Materials Horizons, 1(1), 139-145 (2014
(3) Van Hooghten, Rob, Imperiali, Luna, Boeckx, Vincent, Sharma, Ravi, Vermant, Jan Rough nanoparticles at the oil-water interfaces: their structure, rheology and applications Soft Matter, 9(45), 10791-10798 (2013)

Bio: I studied Chemical Engineering at KU Leuven and got my doctoral degree in 1996 on the topic of liquid crystalline polymers under supervision of  Professors Jan Mewis and P. Moldenaers. Following this my professional experience includes a Postdoctoral fellowship from Elf Aquitaine allowed me to learn about rheo-optics and scattering at Stanford University, Ecole des Mines and in the Centre de Recherche Paul Pascal. After that I was a postdoctoral fellow of the fund of Scientific Research Flanders, before joining the faculty at K.U. Leuven in 2000. I was a full professor of Chemical Engineering and the departmental chairperson (2011-2013). I have held visiting appointments at Stanford University, FZ-Julich and the University of Delaware and Princeton University and at the ESPCI as Michelin Professor. since august 2014 I have been at the ETH Zürich as professor of Soft Materials in the department of materials.

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Practical information

  • General public
  • Free

Organizer

  • Fabien Sorin

Contact

  • Fabien Sorin

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