Emerging Chip-Scale THz Systems for Sensing, Metrology and Security Applications

THz electronics is attracting increasing attention due to the recent “beyond-5G” research. On the other hand, it may surprise many that devices for THz wave generation and detection had in fact been reported as early as one century ago, and even CMOS-based low-cost THz circuits already have more than 20 years of history. Despite those advances, exploration of unique and practical applications of THz technology, especially the applications for THz chip-scale systems, is still far from common. In this talk, we introduce some recent research outcomes in this regard. Showcased prototypes include high-angular-resolution radars, ultra-miniaturized and unclonable RFIDs, molecular spectrometer-based gas sensors and clocks, and low-heat-load cryogenic interconnects, among others.