NEAR-FIELD INTERACTION OF AN EXTENSIONAL-MODE QUARTZ RESONATOR

In this presentation the interaction between a solid surface and the v ibrating tip of an extensional-mode quartz resonator in the presence o f a gaseous ambient is discussed. Thereby, new approaches to the behav iour of the gas dynamics within the gap are used for the first time fo r this quartz resonator. New results will be presented, which approxim ate the measured behaviour of the quality factor as a function of dist ance, gas pressure and viscosity better than the model presented previ ously. (C) 1998 Elsevier Science S.A.