Csáthy Phase Transition (IMAGE) Purdue University Caption Purdue University professor Gábor Csáthy and graduate student Katherine Schreiber inspect equipment used to cool samples to near absolute zero. The equipment was used in Purdue-led research that led to the observation of an unexpected phase transition in an ultrapure material. Credit (Purdue University photo/Mark Simons) Usage Restrictions For editorial use only 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.