US Patent Issued to Rensselaer Polytechnic Institute on Aug. 19 for "Zero-index photonic crystals for visible and near infrared applications" (New York Inventors)

ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,392,929, issued on Aug. 19, was assigned to Rensselaer Polytechnic Institute (Troy, N.Y.).

"Zero-index photonic crystals for visible and near infrared applications" was invented by Shizhao Liu (Troy, N.Y.) and Joel L. Plawsky (Albany, N.Y.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A two dimensional (2D) photonic crystal (PhC) structure includes a substrate and a periodic grating structure formed on the substrate. The periodic grating structure includes a plurality of gratings having a grating period, a. Each pair of adjacent gratings is separated by air. Each grating has a grating width, d, and includes a plurality of alternating layers of a first ...