A High Response Three-Dimensional Ag Nanoparticles/Rgo Microtubular Field Effect Transistor Sensor for No 2 Detections

In this paper, a three-dimensional (3D) microtubular reduced graphene oxide (rGO) FET sensor, decorated with silver nanoparticles (Ag NPs) has been fabricated and demonstrated for NO 2 detections. The performance of our planar 2D sensor and 3D microtubular sensors with different numbers of winding were compared and contrasted. The preliminary results shown that our 3D microtubular Ag NPs/rGO FET sensor with 2 windings exhibits a sensor response of 8.17 % to 10 part per million (ppm) NO 2 at room temperature. This 3D microtubular concept and study provide a new approach for highly integrated and miniaturized hazardous gases sensing applications for health and safety detections, environmental monitoring and beyond.