Copper Plasmonic Waveguides (IMAGE) Moscow Institute of Physics and Technology Caption Nanoscale copper plasmonic waveguides on a silicon chip in a scanning near-field optical microscope (left) and their image obtained using electron microscopy (right). Credit Image courtesy authors of the study 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.