Abstract
The alumina wafer pre-annealed in dry air manifests chemiresistive behaviour: the electrical resistivity is highly sensitive to trace concentrations of acetone vapours even at room temperature. The response suggests that the alumina can be applicable in the role of a room-temperature operated acetone sensor in the ppm range. The elemental analysis of the alumina surface suggests that the sensing mechanism is governed by interaction of adsorbed acetone molecules with alkaline impurities such as sodium and/or magnesium ions naturally occurring in the α-Al2O3.
Full Text
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call