Figure 5
From: Cleaning of LTCC, PEN, and PCB Au electrodes towards reliable electrochemical measurements
Scanning electron micrographs of PEN surfaces (a) Uncleaned, (b) UV-O3, (c) Piranha, (d) KOH + H2O2, (e) KOH + H2O2/KOH Sweep, (f) H2SO4 CV; at 125 × magnification.
