Micrograph of Herringbone Pattern (image) Harvard University Caption An electron micrograph shows the nanoscale perforations at the surface of the plasmonic coupler. Credit Image courtesy of Jiao Lin and Balthasar Müller. Usage Restrictions None 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.