Metasurface stack illustration (IMAGE) Optica Caption Researchers used a stack of spinning metasurface devices to capture spectral and polarization details of thermal radiation as well as the intensity information that is acquired with traditional thermal imaging. Credit Xueji Wang, Purdue University Usage Restrictions None License Original 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.