2-D Infrared Spectroscopy Measurements (IMAGE) University of Chicago Caption MIT's Sam Peng (foreground), and Paul Stevenson, a graduate student in chemistry at the University of Chicago, adjust the two-dimensional infrared spectroscopy system in the laboratory of Professor Andrei Tokmakoff. Credit Sam Peng Usage Restrictions News organizations may use this image in connection with reports about the research of Andrei Tokmakoff and his associates. 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.