Topology and shape optimization of induced-charge electro-osmotic micropumps
For a dielectric solid surrounded by an electrolyte and positioned inside an externally biased parallel-plate capacitor, we study numerically how the resulting induced-charge electro-osmotic (ICEO) flow depends on the topology and shape of the dielectric solid. In particular, we extend existing conv...
| Principais autores: | , , , |
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| Formato: | Artigo |
| Idioma: | en_US |
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Institute of Physics
2011
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| Acesso em linha: | http://hdl.handle.net/1721.1/63144 |
| _version_ | 1826191388627173376 |
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| author | Gregersen, M. M. Okkels, F. Bazant, Martin Z. Bruus, Henrik |
| author2 | Massachusetts Institute of Technology. Department of Chemical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Chemical Engineering Gregersen, M. M. Okkels, F. Bazant, Martin Z. Bruus, Henrik |
| author_sort | Gregersen, M. M. |
| collection | MIT |
| description | For a dielectric solid surrounded by an electrolyte and positioned inside an externally biased parallel-plate capacitor, we study numerically how the resulting induced-charge electro-osmotic (ICEO) flow depends on the topology and shape of the dielectric solid. In particular, we extend existing conventional electrokinetic models with an artificial design field to describe the transition from the liquid electrolyte to the solid dielectric. Using this design field, we have succeeded in applying the method of topology optimization to find system geometries with non-trivial topologies that maximize the net induced electro-osmotic flow rate through the electrolytic capacitor in the direction parallel to the capacitor plates. Once found, the performance of the topology-optimized geometries has been validated by transferring them to conventional electrokinetic models not relying on the artificial design field. Our results show the importance of the topology and shape of the dielectric solid in ICEO systems and point to new designs of ICEO micropumps with significantly improved performance. |
| first_indexed | 2024-09-23T08:55:27Z |
| format | Article |
| id | mit-1721.1/63144 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T08:55:27Z |
| publishDate | 2011 |
| publisher | Institute of Physics |
| record_format | dspace |
| spelling | mit-1721.1/631442022-09-30T12:10:10Z Topology and shape optimization of induced-charge electro-osmotic micropumps Gregersen, M. M. Okkels, F. Bazant, Martin Z. Bruus, Henrik Massachusetts Institute of Technology. Department of Chemical Engineering Massachusetts Institute of Technology. Department of Mathematics Bazant, Martin Z. Bazant, Martin Z. For a dielectric solid surrounded by an electrolyte and positioned inside an externally biased parallel-plate capacitor, we study numerically how the resulting induced-charge electro-osmotic (ICEO) flow depends on the topology and shape of the dielectric solid. In particular, we extend existing conventional electrokinetic models with an artificial design field to describe the transition from the liquid electrolyte to the solid dielectric. Using this design field, we have succeeded in applying the method of topology optimization to find system geometries with non-trivial topologies that maximize the net induced electro-osmotic flow rate through the electrolytic capacitor in the direction parallel to the capacitor plates. Once found, the performance of the topology-optimized geometries has been validated by transferring them to conventional electrokinetic models not relying on the artificial design field. Our results show the importance of the topology and shape of the dielectric solid in ICEO systems and point to new designs of ICEO micropumps with significantly improved performance. 2011-05-31T17:34:38Z 2011-05-31T17:34:38Z 2009-07 2009-01 Article http://purl.org/eprint/type/JournalArticle 1367-2630 http://hdl.handle.net/1721.1/63144 Gregersen, M. M. et al. "Topology and shape optimization of induced-charge electro-osmotic micropumps." New J. Phys. 11 075019. ©2009 IOP Publishing. en_US http://dx.doi.org/10.1088/1367-2630/11/7/075019 New Journal of Physics Creative Commons Attribution-Noncommercial-Share Alike 3.0 http://creativecommons.org/licenses/by-nc-sa/3.0/ application/pdf Institute of Physics MIT web domain |
| spellingShingle | Gregersen, M. M. Okkels, F. Bazant, Martin Z. Bruus, Henrik Topology and shape optimization of induced-charge electro-osmotic micropumps |
| title | Topology and shape optimization of induced-charge electro-osmotic micropumps |
| title_full | Topology and shape optimization of induced-charge electro-osmotic micropumps |
| title_fullStr | Topology and shape optimization of induced-charge electro-osmotic micropumps |
| title_full_unstemmed | Topology and shape optimization of induced-charge electro-osmotic micropumps |
| title_short | Topology and shape optimization of induced-charge electro-osmotic micropumps |
| title_sort | topology and shape optimization of induced charge electro osmotic micropumps |
| url | http://hdl.handle.net/1721.1/63144 |
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