P. Bruschi et al., GAS AND VAPOR EFFECTS ON THE RESISTANCE FLUCTUATION SPECTRA OF CONDUCTING POLYMER THIN-FILM RESISTORS, Sensors and actuators. B, Chemical, 19(1-3), 1994, pp. 421-425
The effects of various vapours on the power spectrum of the resistance
fluctuation of polypyrrole thin-film resistors were studied. An ultra
-low noise amplifier and current source were built in order to detect
the very low signal and bias the resistors. The samples were obtained
by means of chemical vapour deposition on to oxidizing precursors. The
method was successfully extended to n-methylpyrrole and thiophene pol
ymerization.