A colossal step for electronics: New method creates major increase in electrical resistance

Researchers at Osaka University demonstrated a new technique for modifying the hydrogen concentration of resistors by applying an electrical voltage. The generated electric field drove the diffusion of hydrogen ions deeper into the perovskite rare-earth nickelate lattice, which led to a tunable “colossal” increase in electrical resistance. This research can lead to new gas sensors and electrically switchable smart materials.