High-temperature ceramic oxide gas sensors

This paper reviews the current status and research trends of ceramic oxide-based gas sensors. The issues and challenges associated with their development for high temperature applications are examined and discussed. Worldwide research efforts including recent developments at the NSF Center for Industrial Sensors and Measurements (CISM) at Ohio State University, devoted mostly to resolve the issues of selectivity and stability, are also reviewed. These efforts tend to integrate the results obtained from both empirical and basic science approaches, and focus on various stages of sensor development, including development of new material systems, sensor fabrication and manufacturing techniques, and smart sensor arrays.