Electrokinetic transport at a nanocapillary/microchannel interface

Coupled electrokinetic transport phenomena play a central role in concentration polarization near the interface between a permselective nanocapillary membrane and a microchannel. Here the effects of ion concentration and potential distribution on transport through a finite-length nanocapillary are studied using both semi-empirical and fundamental models. The fundamental models are based on the coupled electrohydrodynamic transport equations for multiple charged species in aqueous solution. The semi-empirical models describe average species and fluid fluxes through the respective regions.