Metadevices are redefining how electromagnetic fields and energy can be manipulated, enabling creation of solid-state devices for the terahertz spectrum. Why scaling down reaches a limit in the ...

An innovative arrangement employing diverse electronic and optical principles and components leads to precision frequency within the terahertz band.

Humans typically blink 4 times per second, equivalent to a frequency of 4 Hz. Blinking at a rate of 1 billion times per second, or 1 GHz, is not possible for a human being. But this is the current ...

Schematic of chiral terahertz generation and control: A femtosecond laser interacts with a patterned spintronic emitter, producing elliptically or circularly polarized terahertz waves. Rotating the ...