Figure . Measurement of signal perturbations from a continuous plasma exposure. During all measurements, a plasma power between 5 and 20 W, in combination with a fixed QCM bias voltage of +40 V was used. The white areas correspond to when no plasma is ignited, nor no precursors are allowed to flow into the deposition chamber. The grey areas correspond to when the plasma is ignited but no precursors are allowed to flow into the chamber.