PIRSA:15030109

Enhanced flow of water through nanotubes

Barbosa, M. (2015). Enhanced flow of water through nanotubes. Perimeter Institute. https://pirsa.org/15030109

Barbosa, Marcia. Enhanced flow of water through nanotubes. Perimeter Institute, Mar. 04, 2015, https://pirsa.org/15030109 

          @misc{ pirsa_PIRSA:15030109,
            doi = {10.48660/15030109},
            url = {https://pirsa.org/15030109},
            author = {Barbosa, Marcia},
            keywords = {Other},
            language = {en},
            title = {Enhanced flow of water through nanotubes},
            publisher = {Perimeter Institute},
            year = {2015},
            month = {mar},
            note = {PIRSA:15030109 see, \url{https://pirsa.org}}
          }

Marcia Barbosa Universidade Federal do Rio Grande do Sul

DOI 10.48660/15030109
Collection
Talk Type Scientific Series
Subject

Abstract

We investigate through non-equilibrium molecular dynamic simulations the flow of anomalous
fluids inside rigid nanotubes. Our results reveal an anomalous increase of the overall mass flux
for nanotubes with sufficiently smaller radii. This is explained in terms of a transition from a
single-file type of flow to the movement of an ordered-like fluid as the nanotube radius increases.
The occurrence of a global minimum in the mass flux at this transition reflects the competition
between the two characteristic length scales of the core-softened potential. Moreover, by increasing
further the radius, another substantial change in the flow behavior, which becomes more evident at
low temperatures, leads to a local minimum in the overall mass flux. Microscopically, this second
transition is originated by the formation of a double-layer of flowing particles in the confined
nanotube space. These nano-fluidic features give insights about the behavior of confined isotropic
anomalous fluids.