Topology and shape optimization of induced-charge electro-osmotic micropumps
Name
Bazant_Topology and.pdf
Size
2.23 MB
Format
Adobe PDF
Checksum (MD5)
5d3f203b9fea0a4bd29653da29a70ac6
Author(s)
Gregersen, M. M.
Okkels, F.
Bazant, Martin Z.
Bruus, Henrik
Date Issued
July 2009
Journal
New Journal of Physics
Publisher
Institute of Physics
Citation
Gregersen, M. M. et al. "Topology and shape optimization of induced-charge
electro-osmotic micropumps." New J. Phys. 11 075019. ©2009 IOP Publishing.
Version
Final published version
Abstract
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.
MIT Department
Massachusetts Institute of Technology. Department of Chemical Engineering
Massachusetts Institute of Technology. Department of Mathematics
Terms of Use
Creative Commons Attribution-Noncommercial-Share Alike 3.0
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1088/1367-2630/11/7/075019
