Carbon-polymer composite sensors in electronic noses pp.953-966
Authors: (Claire Hartmann-Thompson, Michigan Molecular Institute, Midland, MI)
Abstract: The use of carbon-polymer composite materials in the transducer elements of electronic nose devices is reviewed. Carbon-polymer composite sensors generate information by swelling and changing their resistivity in response to a vapor. Sets of n carbon-polymer composite elements, where each element is fabricated from a different polymer, may then be assembled into an n-component array that generates a ‘fingerprint’ of n different resistivity changes in response to a given vapor. The fundamental concepts, history, function, design, applications and capabilities of carbon-polymer composite sensor arrays are discussed. The development of commercial carbon-polymer composite array-based electronic nose devices, and the differences between the electronic nose and the mammalian nose are also reviewed.