Biomimetic chemical sensing systems

Two types of biomimetic chemical sensing systems are reviewed. One is an el ectronic nose and tongue which can recognize odor or taste: from the output pattern of arrayed chemical sensors with different but overlapped specific ities. The other is a chemical plume tracing system which has been develope d to mimic the moth behavior in tracing the sexual pheromone from a female. We have created an odor/gas tracing rebut and a compass, both of which can detect the direction from which an odor/gas is issuing.