Roadmap for Optical Metasurfaces

Metasurfaces have recently risen to prominence in optical research, providing unique functionalities that can be used for imaging, beam forming, holography, polarimetry, and many more, while keeping device dimensions small. Despite the fact that a vast range of basic metasurface designs has already been thoroughly studied in the literature, the number of metasurface-related papers is still growing at a rapid pace, as metasurface research is now spreading to adjacent fields, including computational imaging, augmented and virtual reality, automotive, display, biosensing, nonlinear, quantum and topological optics, optical computing, and more. At the same time, the ability of metasurfaces to perform optical functions in much more compact optical systems has triggered strong and constantly growing interest from various industries that greatly benefit from the availability of miniaturized, highly functional, and efficient optical components that can be integrated in optoelectronic systems at low cost. This creates a truly unique opportunity for the field of metasurfaces to make both a scientific and an industrial impact. The goal of this Roadmap is to mark this “golden age” of metasurface research and define future directions to encourage scientists and engineers to drive research and development in the field of metasurfaces toward both scientific excellence and broad industrial adoption. ; © 2024 American Chemical Society. This publication is licensed under theseTerms of Use. ; Section 1: The authors would like to thank Prof. Federico Capasso for valuable discussions at the initial stage of this effort. A.I.K. would like to acknowledge the support by the AME Programmatic Grant No. A18A7b0058 (Singapore), MTC Programmatic Grant No. M21J9b0085 (Singapore), the IET A F Harvey Engineering Research Prize 2016, and by the National Research Foundation of Singapore under Grant NRF-NRFI2017-01; M.L.B. would like to acknowledge funding from an AFOSR MURI Grant (FA9550-17-1-0002), a U.S. Department of Energy Grant ...