That frequency shifts by quartz crystals oscillating in the transverse shear mode can be used to determine adsorption isotherms for monolayer and submonolayer adsorbed films is well understood. Here, the nature of the dynamical information contained in the quality factors of such modes is theoretically discussed.

• Received 4 December 1985

DOI:https://doi.org/10.1103/PhysRevB.34.1403