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CO-induced surface stress change (Δf) measured by the MOSS during the CO adsorption cycle at fixed potential; following CO purging at 3 mL/min for 10 min (red), following Ar purging at 15 mL/min for 30 min to remove the CO from solution (blue), following surface CO removal by voltammetric stripping (green), and the difference between the CO-saturated and CO-free stress values obtained from the potentiostatic pulses shown in Figure 2c (black).
