The contributions of nanowires and nanowire-nanowire junctions in chemiresistors based on metal oxide nanowire networks

This work reports the analysis of chemiresistors based on nanowire networks, decoupling the relative contributions of elementary nanowires and nanowire-nanowire junctions in the macroscopic response of the film. The relationship between the response of microscopic elements and the macroscopic film is established on the basis of the network theory. Results indicate that the film, depending on the material and network properties, may exhibit a junction-like or a mixed junction/nanowire behavior.