Diagram of Binary Metal Oxide Sensor (IMAGE) Moscow Institute of Physics and Technology Caption This is a schematic representation of a binary sensor based on two metal oxides, with the nanoparticles of the catalytically active component (1) in yellow and the nanoparticles of the electron donor component (2) represented by the unshaded circles. Credit the MIPT press office Usage Restrictions With proper attribution (Credit) License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.