Terahertz Modulator (IMAGE) Tufts University Caption THz waves confined in a novel slot waveguide interact with tunable, two-dimensional electron gas. Credit Nano Lab, Tufts University School of Engineering 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.