The dissipation factor in QCM-D technology

- What does it tell us, and how can it be understood?

In QCM-D measurements, the dissipation, i.e. the D-factor, provides information that is complementary to the frequency response. So how can this information be understood?

In this overview, we take a closer look at the behavior of the sensor oscillation at various types of loads and investigate what the D-factor reveals.

The overview includes: What the D-factor tells us

  • A comparison of the purely elastic layer scenario vs the viscoelastic layer scenario

  • A closer look at how the D-factor quantifies the dampening of the sensor oscillating motion

  • An explanation of the superposition of acoustic waves, and how those affect the sensor oscillation amplitude

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