The electrical resistance of 24 different carbon nanotube (CNT) thin film samples
in blowing ambient air and 10 different analyte vapor environments was measured. The
effects of the CNT growth method, different chemical treatments, ball milling, sample
preparation conditions and Ar+-ion irradiation are compared. Significant differences
in the response signal curves as a function of time in the case of the studied sensor/vapor
combinations show the importantrole of the defect structure and attached functional
groups in the chemical sensing properties of CNTs.
