Fig. 4. Validation of the DA sensing capability of the flexible BDD electrode.
CVs of the BDD growth side (a) and nucleation side (b) electrodes in the 1.0 mM DA solution at a scan rate of 1.0 V/s. The voltammograms of both devices after extended soaking in the DA solution were also plotted as a surface fouling test. c SWVs of DA detection in the presence of 100 µM AA. Measurements were performed using a BDD growth side electrode. d Linear fitting of the peak current of SWVs under various DA concentrations of 5–100 µM