Vision of new olfactory sensing array

A newly synthesized material with highly controllable, but partial selectivity is proposed for the construction of catalytic sensors comprising an olfactory array. The transduction principle proposed for this array is that of a fuel-cell-type amperometric sensor. In the example discussed here, it is based on electrochemical oxidation of lower aliphatic alcohols in an alkaline medium. Since a cyclic voltammogram of each sensor in the olfactory array provides high-dimesional data, a pattern recognition technique including mutidimensional data generation, feature extraction, and classification is indispensable. The combination of the new sensor array with a sophisticated pattern recognition algorithm might lead to the next generation of olfactory sensing array. © 2016 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.