|United States Of America||Published Application||2021-010917||04/15/2021||2019-105|
A practical implementation that can generate and detect electromagnetic radiation in the range 0.1 to 10 Terahertz is important in the advancement of biomedicine, security systems, ultrafast 5G & 6G communication, etc.
Prof. Jing Shi and his research team have developed a novel, compact and scalable semiconductor integrated circuit technology (IC) for Terahertz (THz) detection.
The innovation is a thin film device that is an Anti-Ferro Magnetic (AFM) and Heavy Metal (HM) bilayer - thin film structure that offers broad frequency tunability and scalability.
Principle: resonant absorption of THz radiation drives spins in anti-ferromagnet (AFM) into precession, which is detected by heavy metal (HM) as a DC voltage.