Graphene Photosensor (image) University of Maryland Caption UMd physicists have created a sensitive detector of infrared light that promises better weapons detection and new instruments for studying dark energy & the structure of the universe. Illustration represents electrons in bilayer graphene being heated by a beam of light. Credit Illustration by Loretta Kuo and Michelle Groce, University of Maryland Usage Restrictions None 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.