ie9b04257_si_003.avi (3.97 MB)
Electroosmosis with Augmented Mixing in Rigid to Flexible Microchannels with Surface Patterns
media
posted on 2019-10-16, 21:44 authored by Shirsendu Mitra, Surjendu Maity, Shaon Sutradhar, Dipankar BandyopadhyayWe
explore the salient features of electroosmotic flow inside patterned
and deformable microchannels. A computational fluid dynamic simulator
is developed to solve the coupled Poisson’s equation for electrolyte,
Laplace equation for external electric field, and continuity and momentum
equations for fluid flow, with appropriate boundary conditions. The
simulations reveal existence of some exceptional flow profiles with
the variations in normalized Debye length, dimensions, and locations
of heterogeneities, strength of external field, and deformability
of walls. The surface heterogeneities are found to facilitate the
variation in ζ-potential, which in turn locally modulate the
flow rate to cause intermixing of layers. The extent of mixing due
to the deformability and heterogeneity of the walls have been analyzed
to identify the conditions for augmented micromixing in laminar electroosmotic
flows. The variations of current densities along the walls with surface
patterns have been explored for the probable application in differentiating
the ζ-potentials of biosurfaces.
History
Usage metrics
Categories
Keywords
electroosmotic flowflow profilesAugmented Mixingfluid flowDebye lengthFlexible Microchannelssurface heterogeneitiesSurface Patternsζ- potentialsflow ratedeformabilitycause intermixingboundary conditionsvariationlaminar electroosmotic flowsLaplace equationdeformable microchannelsmomentum equationssurface patterns
Licence
Exports
RefWorks
BibTeX
Ref. manager
Endnote
DataCite
NLM
DC