Doubling Fluctuation-Enhanced Sensing Information by Separating   Adsorption-Desorption and Difussive Fluctuations
  We analyze a (symmetrical) two-sensor arrangement with a joint boundary line between the sensors for fluctuation-enhanced sensing. We show a way to separate the adsorption-desorption signal components from the diffusive signal component. Thus the method generates two independent output spectra which doubles the sensor information for pattern recognition. 
Gabor Schmera and Laszlo B. Kish