Transverse flow in thin superhydrophobic channels
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,...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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American Physical Society
2011
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| Online Access: | http://hdl.handle.net/1721.1/62844 |
| _version_ | 1811077492243431424 |
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| author | Feuillebois, Francois Bazant, Martin Z. Vinogradova, Olga I. |
| author2 | Massachusetts Institute of Technology. Department of Chemical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Chemical Engineering Feuillebois, Francois Bazant, Martin Z. Vinogradova, Olga I. |
| author_sort | Feuillebois, Francois |
| collection | MIT |
| description | 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. |
| first_indexed | 2024-09-23T10:43:53Z |
| format | Article |
| id | mit-1721.1/62844 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T10:43:53Z |
| publishDate | 2011 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/628442022-09-30T22:34:36Z Transverse flow in thin superhydrophobic channels Feuillebois, Francois Bazant, Martin Z. Vinogradova, Olga I. Massachusetts Institute of Technology. Department of Chemical Engineering Massachusetts Institute of Technology. Department of Mathematics Bazant, Martin Z. Bazant, Martin Z. 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. Deutsche Forschungsgemeinschaft (DFG). Priority program (Vi 243/1-3) 2011-05-19T13:44:39Z 2011-05-19T13:44:39Z 2010-11 2010-10 Article http://purl.org/eprint/type/JournalArticle 1539-3755 1550-2376 http://hdl.handle.net/1721.1/62844 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 en_US http://dx.doi.org/10.1103/PhysRevE.82.055301 Physical Review E 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. application/pdf American Physical Society APS |
| spellingShingle | Feuillebois, Francois Bazant, Martin Z. Vinogradova, Olga I. Transverse flow in thin superhydrophobic channels |
| title | Transverse flow in thin superhydrophobic channels |
| title_full | Transverse flow in thin superhydrophobic channels |
| title_fullStr | Transverse flow in thin superhydrophobic channels |
| title_full_unstemmed | Transverse flow in thin superhydrophobic channels |
| title_short | Transverse flow in thin superhydrophobic channels |
| title_sort | transverse flow in thin superhydrophobic channels |
| url | http://hdl.handle.net/1721.1/62844 |
| work_keys_str_mv | AT feuilleboisfrancois transverseflowinthinsuperhydrophobicchannels AT bazantmartinz transverseflowinthinsuperhydrophobicchannels AT vinogradovaolgai transverseflowinthinsuperhydrophobicchannels |