Electromagnetic waves with frequencies between microwave and infrared light, also known as terahertz radiation, are leveraged by many existing technologies, including various imaging tools and ...

Active metadevices integrated with semiconductors. (a) Hybrid silicon-metallic resonators for all-optical ultrafast active metamaterials. (b) Broadband metamaterial frequency switch with femtosecond ...

Terahertz wireless has long sounded like the next big leap; fast enough to move huge amounts of data with less delay. Yet the hardware has struggled to keep up. A key part, the resonant tunnel diode, ...