Post-silicon/ single-chip photodetectors further non-invasive neural interfaces and high-speed, secure 6G optical communications

https://www.eurekalert.org/news-releases/1122900

"detectors convert intensity into electrical signal but ignore wavelength (color), polarization, orbital angular momentum usually requiring bulky, external optical filters/ lenses... overcome twisting low-dimensional material layerw with directional atomic structures (such as transition metal dichalcogenides, black phosphorus, tellurium) tuning without needing separate filter... integrates sub-wavelength nanostructures (metasurfaces) allowing chip to distinguish twist of light... edge AI, imaging"