Metasurface Holography Reaching the Highest Efficiency Limit in the Visible via One‐Step Nanoparticle‐Embedded‐Resin Printing

Metasurface holography, the reconstruction of holographic images by modulating the spatial amplitude and phase of light using metasurfaces, has emerged as a next‐generation display technology. However, conventional fabrication techniques used to realize metaholograms are limited by their small patterning areas, high manufacturing costs, and low throughput, which hinder their practical use. Herein, a high efficiency hologram using a one‐step nanomanufacturing method with a titanium dioxide nanoparticle‐embedded‐resin, allowing for high‐throughput and low‐cost fabrication is demonstrated. At a single wavelength, a record high theoretical efficiency of 96.9% is demonstrated with an experimentally measured conversion efficiency of 90.6% and zero‐order diffraction of 7.3% producing an ultrahigh‐efficiency, twin‐image free hologram that can even be directly observed under ambient light conditions. Moreover, a broadband meta‐atom with an average efficiency of 76.0% is designed, and a metahologram with an average efficiency of 62.4% at visible wavelengths from 450 to 650 nm is experimentally demonstrated. An ultrahigh‐efficiency hologram using a one‐step printing of a TiO2 nanoparticle‐embedded‐resin (nano‐PER) is designed and experimentally demonstrated. Record efficiencies of 96.9% and 90.6% are theoretically and experimentally realized. The extremely high efficiency allows the holographic images to be clearly observed even under ambient lighting conditions, while the one‐step nano‐PER nanoimprinting fabrication method allows the realization of high‐throughput and low‐cost metaholograms.