Ultrafast Sonogram (IMAGE) Vanderbilt University Caption A femtosecond pulse of infrared laser light "pumps" the atomic lattice in vanadium dioxide, inducing a phase transition. Credit Courtesy of Fritz Haber Institute 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.