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. Author manuscript; available in PMC: 2011 Mar 1.
Published in final edited form as: Anal Chem. 2010 Mar 1;82(5):1659–1668. doi: 10.1021/ac901066p

Figure 4.

Figure 4

Comparison of electrochemical responses for different generator/collector electrode configurations, with (triangles) and without (circles) active redox cycling for the open (open markers) and closed (filled markers) microchannel. Observed current at the generator electrode(s) (either peak current or plateau current from the CV response, whichever is higher) is plotted as a function of square root of scan rate where initial potential was −0.10 V and switching potential was either +0.35 or +0.30 V for the open and closed microchannel, respectively. Collector electrodes were held at −0.1 V. Data points are averages from three experiments. Error bars represent ±1 standard deviation (N = 3) and are included, although they fall within the size of the markers. The solution consisted of 0.4 mM K4Fe(CN)6 in 0.1 M KCl.