A research team at City University of Hong Kong (CityUHK) has developed a new optical corner-detection imaging method that uses azimuthal Hilbert transform metasurfaces and is designed to work as a universal framework. The study marks an important advance in high-speed, low-power optical information processing and has demonstrated potential for motion-tracking applications.

The study was led by Professor Tsai Din-ping, chair professor in the Department of Electrical Engineering at CityUHK. The project was conducted in collaboration with Professor Tao Li from the College of Engineering and Applied Sciences at Nanjing University.

Titled “Optical corner detection with azimuthal Hilbert transform metasurfaces,” the study is published in Science Advances.