ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,489,217, issued on Dec. 2, was assigned to Brown University (Providence, R.I.).
"Artificial dielectric isolator for THz radiation" was invented by Rajind Mendis (Providence, R.I.), Masaya Nagai (Osaka, Japan) and Daniel M. Mittleman (Providence, R.I.).
According to the abstract* released by the U.S. Patent & Trademark Office: "An isolator based on a waveguide-based artificial dielectric medium is scalable to a range of desired terahertz frequencies, has non-reciprocal transmission and provides low insertion loss and high isolation at various tunable terahertz frequencies, far exceeding the performance of other terahertz isolators, and rivaling that of commercial optical isolators base...