Chemical vapor deposition (IMAGE) DOE/Oak Ridge National Laboratory Caption A stainless-steel disk was heated to create iron and nickel oxide particles on its surface. The particles catalyzed carbon nanotube growth during chemical vapor deposition. Credit Carlos Jones/ORNL, U.S. Dept. of Energy Usage Restrictions None 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.