Split Ring Resonators (IMAGE) University of Southampton Caption Light focussed by nano-antennas on a gold surface leaks out by generating propagating plasmons. Credit Urban Senica, ETH Zurich. Usage Restrictions No restrictions. License CC0 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.