Quartz crystal microbalance setup for frequency and Q‐factor measurements in gaseous and liquid environments

  title={Quartz crystal microbalance setup for frequency and Q‐factor measurements in gaseous and liquid environments},
  author={Michael Rodahl and Fredrik H{\"o}{\"o}k and Anatol Krozer and Peter Brzezinski and Bengt Kasemo},
  journal={Review of Scientific Instruments},
An experimental setup has been constructed for simultaneous measurements of the frequency, the absolute Q factor, and the amplitude of oscillation of a quartz crystal microbalance (QCM). The technical solution allows operation in vacuum, air, or liquid. The crystal is driven at its resonant frequency by an oscillator that can be intermittently disconnected causing the crystal oscillation amplitude to decay exponentially. From the recorded decay curve the absolute Q factor (calculated from the… 

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