Abstract
In the natural/electric field environment, quartz crystal contact medium is generally considered as rigid thin film. However, with the increase of time, when the ash coverage reaches the level of microgram, the crystal frequency changes show characteristics similar to those in Newtonian fluid, that is, large damping causes the crystal frequency to change greatly, leading to large stray and chaotic peaks in both amplitude frequency and phase frequency. The spectrum curve amplitude is significantly reduced, the signal jitter is large, and the Q value is significantly reduced. The signal jitter in a small range results in a lot of burrs in the spectrum curve and causes the measurement error.
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