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Shifts in frequency and bandwidth obtained in a modulation experiment, using the fixed-frequency-drive mode (FFD mode). The stimulus was the electrical potential of the front electrode, varied between +0.3 V and −0.3 V vs. a platinum pseudo-reference electrode. The sample was an electrochemically inert electrolyte. After accumulation overnight, the noise was around 20 mHz, based on a time interval of 100 µs per data point.
