Electrokinetic instability due to streamwise conductivity gradients in microchip electrophoresis

We present an experimental and numerical investigation of electrokinetic instability (EKI) in microchannel flow with streamwise conductivity gradients, such as those observed during sample stacking in capillary electrophoresis. A plug of a low-conductivity electrolyte solution is initially sandwiche...

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Veröffentlicht in:	Journal of fluid mechanics 2021-10, Vol.925, Article A14
Hauptverfasser:	Dubey, Kaushlendra, Sanghi, Sanjeev, Gupta, Amit, Bahga, Supreet Singh
Format:	Artikel
Sprache:	eng
Schlagworte:	Analytical methods Capillary electrophoresis Computational fluid dynamics Conductivity Configurations Electric field Electric fields Electrokinetics Electrolytes Electroosmosis Electrophoresis Experiments Flow stability Fluid flow Fluorescence Gradients Instability Ion transport JFM Papers Microchannels Physics Proper Orthogonal Decomposition Reynolds number Scaling Semiconductors Simulation Tracers Velocity
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