Abstract
We study how adsorption of a near-critical binary mixture in a nanopore is modified by flow inside the pore. We identify three types of steady states upon variation of the pore P\'{e}clet number (${\rm Pe}_p$), which can be reversibly accessed by the application of an external pressure. Interestingly, for small ${\rm Pe}_p$ the pore acts as a weakly selective membrane which separates the mixture. For intermediate ${\rm Pe}_p$, the flow effectively shifts the adsorption in the pore thereby opening possibilities for enhanced and tunable solute transport through the pore. For large ${\rm Pe}_p$, the adsorption is progressively reduced inside the pore, accompanied by a long ranged dispersion of the mixture far from the pore.
Original language | English |
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Article number | 014502 |
Pages (from-to) | 1-5 |
Journal | Physical Review Letters |
Volume | 118 |
Issue number | 1 |
DOIs | |
Publication status | Published - 6 Jan 2017 |
Keywords
- cond-mat.soft
- physics.flu-dyn