Transverse flow in thin superhydrophobic channels
Name
Feuillebois-2010-Transverse flow in t.pdf
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Author(s)
Feuillebois, Francois
Bazant, Martin Z.
Vinogradova, Olga I.
Date Issued
November 2010
Journal
Physical Review E
Publisher
American Physical Society
Citation
Feuillebois, François, Martin Z. Bazant, and Olga I. Vinogradova. “Transverse Flow in Thin Superhydrophobic Channels.” Physical Review E 82.5 (2010) : 055301. © 2010 The American Physical Society
Version
Final published version
Abstract
We provide some general theoretical results to guide the optimization of transverse hydrodynamic phenomena in superhydrophobic channels. Our focus is on the canonical micro- and nanofluidic geometry of a parallel-plate channel with an arbitrary two-component (low-slip and high-slip) coarse texture, varying on scales larger than the channel thickness. By analyzing rigorous bounds on the permeability, over all possible patterns, we optimize the area fractions, slip lengths, geometry, and orientation of the surface texture to maximize transverse flow. In the case of two aligned striped surfaces, very strong transverse flows are possible. Optimized superhydrophobic surfaces may find applications in passive microfluidic mixing and amplification of transverse electrokinetic phenomena.
MIT Department
Massachusetts Institute of Technology. Department of Chemical Engineering
Massachusetts Institute of Technology. Department of Mathematics
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevE.82.055301
