Why it is useful to use multiple harmonics in QCM-measurements

- What information do the different harmonics offer?

Apart from using the energy dissipation factor in QCM-measurements, it is possible to gain even more information from a viscoelastic sample by monitoring multiple overtones.

In this overview, we take a closer look at what information the overtones offer. We are considering theoretical polymer layers with various thicknesses.

The overview includes information on: Why useful to measure multiple overtones

  • how each overtone provides a different perspective of the sample material

  • how the shear amplitude varies with the harmonic and the sensor load

  • how the f and D responses for the overtones depend on the layer properties

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