Thermal Metasurface (IMAGE) Advanced Science Research Center, GC/CUNY Caption A thermal metasurface is made of a single layer of nanostructured silicon (gray) on top of glass (blue) and a metal mirror (gold). The nanostructured surface is specifically tailored so that it thermally emits circularly polarized light to a desired direction. Credit Adam Overvig Usage Restrictions All rights reserved 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.