Three-Terminal Artificial Olfactory Sensors based on Emerging Materials: Mechanism and Application

摘要

Over the past several years, a variety of hardware-based artificial sensorysystems, including artificial skin, electronic noses, and artificial retinas, haveattracted considerable research interest in advanced artificial intelligencesystems. The integration of sensing and computing functions in single ormultiple connected self-adaptive field-effect transistor (FET)-structured sensorydevices to implement artificial olfactory systems for in-sensor computinghas recently attracted increasing attention. In this review, the developmentstatus of FET-based gas sensory devices is focused on. The mechanismsof sensory FET devices, gas-recognition materials, strategies for improvingsensing performance, and the integration of sensory devices into the artificialolfactory system are discussed. Finally, the further development of FET-basedsensory devices for artificial olfactory systems and their great potential fornext-generation intelligent sensory systems are discussed in broad fields suchas environmental monitoring, health care, and military industries.