Toward Intelligent Gas Sensors

Abstract

Gas sensors are evolving from passive detectors into intelligent systems that integrate functional materials, device engineering, and data-driven learning to interpret complex chemical environments. This evolution reflects a broader transition in electronics, in which sensing, computation, and decision-making are increasingly co-designed at the device and system levels. Although advances in nanomaterials and microfabrication have substantially improved sensitivity, power consumption, and form factor, most gas sensors continue to operate as reactive components, delivering electrical outputs without contextual interpretation. As applications shift toward distributed, wearable, and autonomous platforms, this limitation has become increasingly restrictive.