Fly Head (IMAGE) Penn State Caption The magnified head of a fly coated with chalcogenic glass. Credit Carlo Pantano/Akhlesh Lakhtakia, Penn State Usage Restrictions For non commerical use only 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.