Grande conférence iLM

Vendredi 9 Septembre 2011 à 14h00.

Fluidics with Nanoporous Membranes - Gas Flow, Liquid Imbibition and Molecular Translocation

Patrick HUBER
(Experimental Physics, Saarland University, Saarbruecken (Germany) and Department of Physics and Astronomy, Pontifical Catholic University, Santiago (Chile)



Invité(e) par
Lydéric BOCQUET

présentera en 1 heure :

''The properties of molecular assemblies confined in pores a few nanometers across play a dominant role in phenomena ranging from clay swelling, frost heave, oil recovery and catalysis, to colloidal stability, protein folding and transport in cells and tissues. Therefore the advent of tailorable nanoporous membranes, most prominently arrays of carbon nanotube bundles, of silicon, silica and alumina channels, has led to a growing interest in the equilibrium and non-equilibrium behavior of solids and liquids confined in such environments. In my talk I will present studies on molecular self-diffusion, gas flow, liquid imbibition and pore translocation, as probed by neutron spin-echo spectroscopy, neutron imaging, gravimetrical and optical imbibition experiments. Depending on the molecular species investigated (water, linear hydrocarbons, proteins, liquid crystals, polymers and proteins) a remarkable robustness of macroscopic concepts, however, also significant deviations from the bulk behaviour are observable.''