Non-Contact, Non-Destructive Visualization (IMAGE) Tokyo Institute of Technology Caption The CNT THz imager enabled clear, non-destructive visualization of a metal paper clip inside an envelope. Credit <i>ACS Applied Nano Materials</i> 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.