Jun Mao, Zhifeng Ren (IMAGE) University of Houston Caption Zhifeng Ren, right, director of the Texas Center for Superconductivity at the University of Houston, and researcher Jun Mao are calling for renewed emphasis on developing new materials for thermoelectric cooling. Credit University of Houston 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.