Cyrill Grengg (IMAGE) Graz University of Technology Caption Cyrill Grengg heads the CD lab at TU Graz. Image source: Lunghammer - TU Graz Credit Lunghammer - TU Graz Usage Restrictions Free for usage when stating the image source "Lunghammer - TU Graz" 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.