Journal
APPLIED PHYSICS LETTERS
Volume 99, Issue 15, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3645621
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- MicroNed, the Microtechnology Research Programme of The Netherlands [II-B-2]
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We study time-averaged flows within sessile drops that oscillate under the influence of an AC voltage applied in electrowetting configuration. We show that the average flow velocity in the azimuthal plane correlates with the eigenmodes of the drop in the polar direction and-most importantly-we demonstrate that the azimuthal symmetry of the flow fields can be broken by introducing pinning sites along the contact line of the drop. We anticipate that the controlled introduction of azimuthal vortices increases the mixing efficiency inside the droplet. (C) 2011 American Institute of Physics. [doi:10.1063/1.3645621]
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