EPFL researchers have developed a device that operates ten times faster than today's fastest transistors. The new device also operates about 100 times faster than transistors that are in current computers. The nanoscale device they have created enables the generation of high-power terahertz waves. The scientist says that those waves are notoriously difficult to produce. Being very difficult to produce, the waves hold promise for a range of applications, including imaging or sensing and high-speed wireless communications.