Reversal current observed in micro- and submicro-channel flow under non-continuous DC electric field

Duan Yi-fei¹, Ma Hong-wei¹, Gao Ze-yang¹, Wang Kai-ge^{1, †}, Zhao Wei^{1, 2}, Sun Dan¹, Wang Gui-ren², Li Jun-jie³, Bai Jin-tao¹, Gu Chang-zhi³

(color online) Steady current versus voltage for various channel diameters. The concentrations of the electrolyte KCl are (a) 0.5 M and (b) 1 M. ■, , and represent channel diameters of 200 nm, 500 nm, and , respectively.