New procedures for building-up the active layer of gas sensors on flexible polymers

The development of an active metal oxide layer by Atmospheric Plasma Spray in a gas sensor consisting of a flexible polymeric thin film was the target of the research. A factorial design of experiments was carried out in order to find out the operation conditions that could avoid the thermal degradation of the polymer due to the heat involved in the plasma spraying process. NH3(g) was used in a range of concentrations for ratifying the gas sensing capability of the device.