Nathan Youngblood and Feng Xiong (IMAGE) University of Pittsburgh Caption Nathan Youngblood (left) and Feng Xiong, assistant professors of electrical and computer engineering, received NSF funding to study phase-change materials and overcome the challenges inherent in the technology. Credit University of Pittsburgh 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.