image (IMAGE) Virginia Tech Caption Hang Yu's laboratory in the Department of Materials Science and Engineering focuses on a low-temperature metals printing process that uses friction to heat but not melt material and deposit it in layers to create components in a range of shapes and sizes. Photo by Tonia Moxley for Virginia Tech. Credit Virginia Tech Usage Restrictions Credit Virginia Tech License Original 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.