Asymmetric boundary conditions and their relevance in minimal passive mass species transport in time-periodic electro-osmotic flows
Source abstract
Abstract
A set of dimensionless groups along with constraints on their values are formulated to serve as an indication of the parametric combinations, leading to minimal enhancement of streamwise passive species transport in time-periodic electro-osmotic microchannel flows with asymmetric hydrodynamic slip and zeta potential boundaries. While the slip lengths and zeta potentials are mostly treated as uncoupled in the electrokinetic transport literature, we incorporate into the analysis wall surface charge/potential coupled apparent slip lengths and find that more than one minimal enhancement instances may be achieved during a zeta potential sweep, provided that the uncharged surface slip length ratio is large enough.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Microfluidic and Capillary Electrophoresis Applications · Nanopore and Nanochannel Transport Studies · Electrostatics and Colloid Interactions
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (37)
Show source-provided references
1. Tuning the dispersion of reactive solute by steady and oscillatory electroosmotic-Poiseuille flows in polyelectrolyte-grafted micro/nanotubes10.1017/jfm.2019.628 ↗
2. Slippage effect on the dispersion coefficient of a passive solute in a pulsatile electro-osmotic flow in a microcapillary10.1103/physrevfluids.3.084503 ↗
3. Pulsatile electroosmotic flow in a microchannel with asymmetric wall zeta potentials and its effect on mass transport enhancement and mixing10.1016/j.ces.2018.03.051 ↗
4. Mass transport and separation of species in an oscillating electro-osmotic flow caused by distinct periodic electric fields10.1088/1402-4896/ab2a9a ↗
5. Mass transfer through a concentric-annulus microchannel driven by an oscillatory electroosmotic flow of a Maxwell fluid10.1016/j.jnnfm.2020.104281 ↗
6. Hydrodynamics rheological impact of an oscillatory electroosmotic flow on a mass transfer process in a microcapillary with a reversible wall reaction10.1063/5.0027818 ↗
7. Mass transport by an oscillatory electroosmotic flow of power-law fluids in hydrophobic slit microchannels10.1007/s40430-020-02746-z ↗
8. Steric and slippage effects on mass transport by using an oscillatory electroosmotic flow of power-law fluids10.3390/mi12050539 ↗
9. Solute dispersion in oscillating electro-osmotic flow with boundary mass exchange10.1007/s10404-010-0650-z ↗
10. Solute transport under oscillating electro-osmotic flow in a closed-ended cylindrical pore10.1007/s10665-017-9949-z ↗
11. Enhancement of mass transport and separation of species by oscillatory electroosmotic flows10.1098/rspa.2006.1668 ↗
12. Energy efficiency analysis of mass transport enhancement in time-periodic oscillatory electroosmosis10.1063/5.0041229 ↗
13. Dispersion in electroosmotic flow generated by oscillatory electric field interacting with oscillatory wall potentials10.1007/s10404-011-0868-4 ↗
14. Dispersion in oscillatory electro-osmotic flow through a parallel-plate channel with kinetic sorptive exchange at walls10.1016/s1001-6058(14)60041-x ↗
15. Dispersion of soluble matter in solvent flowing slowly through a tube10.1098/rspa.1953.0139 ↗
16. On the dispersion of a solute in a fluid flowing through a tube10.1098/rspa.1956.0065 ↗
17. 1994
18. Hydrodynamic dispersion of a neutral nonreacting solute in electroosmotic flow10.1021/ac990714w ↗
19. Broadening of neutral solute band in electroosmotic flow through submicron channel with longitudinal non-uniformity of zeta potential10.1016/j.colsurfa.2009.09.043 ↗
20. Broadening of neutral analyte band in electroosmotic flow through slit channel with different zeta potentials of the walls10.1007/s10404-012-1118-0 ↗
21. How does wall slippage affect hydrodynamic dispersion?10.1007/s10404-010-0645-9 ↗
22. Active control of dispersion within a channel with flow and pulsating walls10.1103/physrevfluids.4.114202 ↗
23. Enhanced diffusional separation in liquids by sinusoidal oscillations10.1080/01496398808057637 ↗
24. Physics of oscillatory flow and its effect on the mass transfer and separation of species10.1063/1.1351549 ↗
25. A comparison between the enhanced mass transfer in boundary and pressure driven oscillatory flow10.1016/s0017-9310(02)00111-4 ↗
26. 2003
27. Electrokinetic instability micromixing10.1021/ac0155411 ↗
28. Electrokinetic mixing in microfluidic systems10.1007/s10404-007-0178-z ↗
29. Hydrodynamics within the electric double layer on slipping surfaces10.1103/physrevlett.93.257805 ↗
30. Liquid friction on charged surfaces: From hydrodynamic slippage to electrokinetics10.1063/1.2397677 ↗
31. Aqueous electrolytes near hydrophobic surfaces: Dynamic effects of ion specificity and hydrodynamic slip10.1021/la7021787 ↗
32. Liquid-solid slip on charged walls: The dramatic impact of charge distribution10.1103/PhysRevLett.125.014501 ↗
33. Role of surface charge on boundary slip in fluid flow10.1016/j.jcis.2012.10.043 ↗
34. Quantification of surface charge density and its effect on boundary slip10.1021/la401168w ↗
35. The coupling of surface charge and boundary slip at the solid–liquid interface and their combined effect on fluid drag: A review10.1016/j.jcis.2015.05.015 ↗
36. Electrokinetic flow and dispersion in capillary electrophoresis10.1146/annurev.fluid.38.050304.092053 ↗
37. Zeta potential and electroosmotic mobility in microfluidic devices fabricated from hydrophobic polymers: 2. Slip and interfacial water structure10.1002/elps.200800735 ↗