Mass-sensitive gas sensors

Kg. 1.9 Schematic diagrams of mass-sensitive gas sensors (a, b) quartz crystal microbalance (QCM) device (c) surface acoustic wave (SAW) device (d, e) microcantilever - (d) dynamic mode absorption of analyte molecules in a sensor layer leads to shift in resonance frequency, and (e) static mode the cantilever bends owing to adsorption of analyte molecules and change of surface stress at the cantilever surface (Reprinted with permission from Battison et al. (2001). Copyright 2001 Elsevier)... 

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