Researchers at the University of Glasgow have built a tiny crystal chip that generates tunable terahertz waves and has kept ...

(Nanowerk News) Researchers at Tohoku University have addressed one of the key challenges of electromagnetic waves in the terahertz frequency range by developing a new type of tuneable filter for ...

Schematic concept of the developed tunable filter. (a) Cross-sectional view of the filter; (b) relationship between period and refractive index; (c) frequency shift due to the change of refractive ...