Matt Clark, University of Nottingham (IMAGE) University of Nottingham Caption Professor Matt Clark, from the Optics and Photonics Group, University of Nottingham, is working on the nanoscale ultrasound instrumentation. Credit University of Nottingham Usage Restrictions None. 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.