Thermoelectric Material Images (IMAGE) University of Houston Caption SEM images of the material hot-pressed at a) 1123 K, b)1173 K, c) 1273 K, and d)1373 K. 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.