Professor Harry Tuller is a world-renowned expert in electroceramics, a class of ceramic materials that enable technologies such as energy conversion, environmental sensing, electronics, and communications. Another research focus is solid-state ionics, which examines the movement of ions, or charged atoms, in solids such as ceramics. His research group models, processes, and optimizes energy-related devices such as sensors, batteries, and fuel cells as well as microelectromechanical (MEMS) systems.