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

Over the past several years, a variety of hardware-based artificial sensory systems, including artificial skin, electronic noses, and artificial retinas, have attracted considerable research interest in advanced artificial intelligence systems. The integration of sensing and computing functions in single or multiple connected self-adaptive field-effect transistor (FET)-structured sensory devices to implement artificial olfactory systems for in-sensor computing has recently attracted increasing attention. In this review, the development status of FET-based gas sensory devices is focused on. The mechanisms of sensory FET devices, gas-recognition materials, strategies for improving sensing performance, and the integration of sensory devices into the artificial olfactory system are discussed. Finally, the further development of FET-based sensory devices for artificial olfactory systems and their great potential for next-generation intelligent sensory systems are discussed in broad fields such as environmental monitoring, health care, and military industries.

Automated summary

In recent years, a variety of hardware-based artificial sensory systems have attracted significant research interest in advanced artificial intelligence systems. This review focuses on the development of field-effect transistor (FET)-based gas sensory devices, discussing their mechanisms, gas recognition materials, strategies for improving sensing performance, and integration into artificial olfactory systems. The potential of FET-based sensory devices for next-generation intelligent sensory systems in fields such as environmental monitoring, health care, and military industries is also discussed.