Diagram of the Nanocube Gas Sensor (IMAGE) University of Tokyo Caption Researchers at the University of Tokyo have built a simple, cheap, highly sensitive and specific detector of liquefied petroleum gas (LPG). The gas is detected by a tiny box called a nanocube, about one-fortieth the size of a human red blood cell. The nanocube glows blue under fluorescent light when it is filled with the gas. Originally published in Communications Chemistry DOI: 10.1038/s42004-019-0212-6 Credit Zhan et al., CC-BY Usage Restrictions None 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.