Synthesis Process (IMAGE) U.S. Army Research Laboratory Caption Researchers show the synthetic process they use to create photo responsive reinforcing agents. A carbon nanotube, or CNT, is treated with a photo-reactive molecule called benzophenone. After exposure to ultraviolet light, the molecules bond to the surrounding polymer chain. This creates a covalent link between the nanotube and the polymer. Credit US Army illustration 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.