Plasmonic Waves (IMAGE) Rice University Caption Gold discs tuned to capture the energy from two incoming beams of light can produce output of a third color. Here a computer animation shows how the electromagnetic wave (red=positive, blue=negative) from the incoming light propagates through the system as a series of plasmonic waves. Credit Yu-Rong Zhen/Rice University Usage Restrictions Must credit: 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.