Electroosmosis of viscoelastic fluids over charge modulated surfaces in narrow confinements

摘要: In the present work, we attempt to analyze electroosmotic flow of a viscoelastic fluid, following quasi-linear constitutive behavior, over charge modulated surfaces in narrow confinements. We obtain analytical solutions for field thin electrical double layer (EDL) limit through asymptotic analysis small Deborah numbers. show that combination matched and regular expansion is needed EDL limit. subsequently determine modified Smoluchowski slip velocity fluids nature behavior adds periodicity flow. also net throughput channel demonstrate its relative decrement as compared Newtonian fluid. Our results may have potential implications towards augmenting microfluidic mixing by exploiting electrokinetic transport surfaces.