ABSTRACT

This chapter is dedicated to Yukio Ogata, not only a great scientist but also a wonderful and caring friend.

There is a wide variety of gas detection devices that include infrared spectroscopic, mass sensitive, and solid-state sensors. Several solid-state devices detect analytes by transducing an electrical property associated with a detection interface and from this measurement evaluating an interacting gas. In this chapter, we focus on highly sensitive conductometric gas sensors that can be made to consist of a sensitive interface layer decorated by nanostructure island sites, which (1) do not interact electronically, (2) can be easily constructed without a requirement of complex self-assembly, (3) are much easier to implement and reproduce than film depositions, and (4) require far fewer starting materials.