Barnase protein (IMAGE) University of Barcelona Caption A team of the Faculty of Physics and the Institute of Nanoscience and Nanotechnology of the University of Barcelona (IN2UB) introduces for the first time a temperature monitor in optical tweezers to determine the entropy and enthalpy of protein formation. Credit Proceedings of the National Academy of Sciences (PNAS) Usage Restrictions Credit must be given to the creator. License CC BY 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.