SEM of Gold Metasurface (image) University of California - San Diego Share Print E-Mail Caption These are scanning electron micrograph images of the semiconductor-free microelectronic device (top left) and the gold metasurface (top right, bottom). Credit UC San Diego Applied Electromagnetics Group Usage Restrictions Please credit UC San Diego Applied Electromagnetics Group. Share Print E-Mail 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.