Iron Carbide Nanowire (IMAGE) Rensselaer Polytechnic Institute Caption An iron carbide nanowire is squeezed through the center of a multi-walled carbon nanotube. Credit Johannes Gutenberg University/Banhart 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.