Giovedí 25 maggio 2017
Aula "A. Rostagni"
Nanofluidics: fluid transport at the molecular scale
Centre National pour la Recherche Scientifique and Ecole Normale
Nanofluidics is the frontier at which the continuum picture of fluid mechanics meets the atomic nature
of matter. New models of fluid transport are expected to emerge from the confinement of liquids at the nanoscale, with potential
applications in ultrafiltration, desalination and energy conversion [1-3]. Nevertheless, advancing our fundamental understanding
of fluid transport on the smallest scales requires mass and ion dynamics to be ultimately characterized across an individual
channel to avoid averaging over many pores. A major challenge for nanofluidics thus lies in building distinct and well-controlled
nanochannels, amenable to the systematic exploration of their properties. In this context a system of particular interest
is represented by individual Nanotubes : measurements and simulations have found that water moves through carbon nanotubes
at exceptionally high rates owing to nearly frictionless interfaces [4,5]. These observations have stimulated interest in nanotube-based
membranes, yet the exact mechanisms of water transport inside the nanotubes and at the water–carbon interface continue to
be debated, because existing theories do not provide a satisfactory explanation for the limited number of experimental results
available so far. This lack of experimental results arises because, even though controlled and systematic studies have
explored transport through individual nanotubes, none has met the considerable technical challenge of unambiguously
measuring the permeability of a single nanotube.
In this seminar we will revist the current state of the art of nanofluidics and we will discuss how nanoassembling and
manipulation offer new tool to investigate the fluid trasport at a scale where the limit of the classic description is met .
We will finally present our recent studies on fluid trasnport in individual nanotubes and we will put them in the perspective
of the new field of carbon nanofluidics .
 L. Bocquet, E.
Charlaix, Chemical Society Reviews 39, 1073 - 1095 (2010)
 D. Cohen-Tanudgi, J. Grossman, Nanoletters 12, 3602-3608
 A. Siria et al., Nature 494, 455-458 (2013)
 J.K. Holt et al., Science 312, 1034-1037 (2006)
 K. Falk, F. Sedlmeier, L. Joly, R. R. Net, L. Bocquet,
NanoLetters 10, 4067 (2010)
 E. Secchi, S. Marbach, A. Niguès, D. Stein, A. Siria,
L. Bocquet, Nature 537 210 (2016)
È possibile rivedere l'evento in streaming http://www.dfa.unipd.it/live/