Main photo: Ratcliff and Undergraduate (IMAGE) University of Arizona College of Engineering Caption Erin Ratcliff, left, and undergraduate student Zachary Kushlan examine an organic semiconductor thin film prepared in the Ratcliff lab. Credit University of Arizona 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.