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. 2015 Aug 5;15(8):19212–19224. doi: 10.3390/s150819212

Figure 1.

Figure 1

Characterization of the SPIMs by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) after the washing with piranha solution and NaOH/HCl solution. (A) the current change; and (B) the impedance change.