A REVIEW ON GAS SENSORS ENHANCED BY CARBON NANOMATERIAL

Abstract

In a wide variety of applications, varying from lab-on-a-chip and in vivo biosensors to environment tracking and war agent identification, there could be a need for quick, responsive and powerful digital sensors applicable for trace detection instead of the commonly hired high-priced, voluminous and complicated instrumental methods. In the last few years, carbon nanomaterials have attracted a great deal of scientific attention. For the development of the next generation of miniaturised, low-power, ubiquitous sensors, their special electrical, optical and mechanical properties make them quite important. In the specific case of gas sensing, the superiority role of other well-established nanomaterials is challenged by certain carbon nanomaterials like nanofibers, nanotubes and graphene, but the industrial exploitation of carbon nanomaterials is still a long way off. This paper discusses the latest technology of carbon nanomaterial electrical gas sensors, describes the bottlenecks that impair their commercialization, and some latest advancements as well. Finally, an outlook is presented in which obstacles and possibilities are described.