Joint research team succeeds in transporting light using non-Hermitian meta-gratings

https://phys.org/news/2023-05-joint-team-succeeds-non-hermitian-meta-gratings.html

"non-Hermitian meta-grating controls light beam direction... light and SPP propagate in opposite directions by controlling meta-grating size and distance... convert incident light into SSPs back to normal light... detection of antigens for disease diagnosis or harmful gases in atmosphere... brings non-Hermitian optics to the nano-scale territory. It will contribute to the development of future plasmonic devices that have excellent direction controllability and performance."