Smart Glass (IMAGE) University of Delaware Caption Electrical engineers at the University of Delaware developed their version of smart glass technology. It starts opaque but turns transparent when filled with index-matching fluid, as shown in the bottom portion of this pane. Credit University of Delaware Usage Restrictions Must credit University of Delaware 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.