For such a situation, the small-load approximation predicts The QCM allows for non-destructive testing of the shear stiffness of multi-asperity contacts. See also Sauerbrey equation Sauerbrey constant Sauerbrey layer Weighing scale Piezoelectricity Thin-film thickness monitor Quartz crystal microbalance with dissipation monitoring (QCM-D) Tapered element oscillating microbalance (TEOM) Notes References Further reading Quartz Crystal Microbalance with Dissipation monitoring What is QCM and how does it work? The Principles of QCM-I with impedance analysis and dissipation monitoring (QCM-D) External links QCM mini-FAQ Weighing instruments