Interfacial electrokinetic effects on liquid flow in microchannels

By Liqing Ren, Wei Qu, Dongqing Li. 2001

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Fluid flow in micro-channels (2005, background): “Fluid–surface interaction can be put forward as an explanation of the Poiseuille number increase by the fluid ionic coupling with the surface [44, 45 ,34].”
Laminar mixing, heat transfer and pressure drop in tree-like microchannel nets and their application for thermal management in polymer electrolyte fuel cells (2004, background): “Possible reasons for the measured deviations are discussed and investigated in the literature [25–33]: measurement inaccuracy at the micro-scales, high relative surface roughness at the channel walls, the electric double-layer (EDL) effect, viscous heating, and slip-flow for gases at high Knudsen nu”
Size effect on microscale single-phase flow and heat transfer (2002, result): “[36] reported numerical and experimental results for the EDL effect with different liquids.”
ENGINEERING FLOWS IN SMALL DEVICES (2004, background): “This “electroviscous” effect can be significant in narrow channels (Rice & Whitehead 1965), and accounts for the observed 15% increase of the hydrodynamic resistance in a 10-um glass channel for ion concentration less than 10−4 molar (Ren et al. 2001).”