Chemiresistor gas sensors using semiconductor metal oxides

This chapter presents a review of metal-oxide-based chemical sensors and chemiresistors with low dimensional semiconducting structures and nanoparticles, and examines recent developments in these fields. The fundamentals of sensors are discussed first, together with a description of the typical techniques adopted for the preparation of low dimensional structures. The final part looks at new research trends, low cost, and alternative substrate sensors. A comprehensive list of online resources completes the chapter.