Piezoelectric Resonance and Mass-Induced Frequency Shift

Why a vibrating quartz crystal's own natural resonant frequency shifts in a precise, predictable way whenever even a tiny amount of extra mass is added to its surface.

References

• Sauerbrey, G. "Verwendung von Schwingquarzen." Zeitschrift für Physik 155, no. 2 (1959): 206–222.