Journal
PHYSICAL REVIEW LETTERS
Volume 112, Issue 12, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.112.128302
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Funding
- National Science Foundation Graduate Research Fellowship [DGE-114747]
- Robert and Katherine Eustis Stanford Graduate Fellowship
- Charles Lee Powell Foundation
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We present direct numerical simulations of the coupled Poisson-Nernst-Planck and Navier-Stokes equations for an electrolyte around a polarizable cylinder subject to an external electric field. For high fields, a novel chaotic flow phenomenon is discovered. Our calculations indicate significant improvement in the prediction of the mean flow relative to standard asymptotic models. These results open possibilities for chaos-enhanced mixing in microdevices and provide insight into barriers to efficient electrokinetic micropumps with broad applications in electrochemical and lab-on-a-chip systems.
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