Bird's eye inspired hyperuniform disordered TiO₂ meta-atom based high-efficiency metalens.

ABSTRACT: We proposed an ingenious, highly efficient TiO₂ meta-atom (MA)-based near-infrared disordered metalens structure harnessing bird's eye-inspired hyperuniform distribution and analyzed its optical and imaging properties employing the finite-difference time-domain (FDTD) method. The hyperuniform disordered MAs constructed an image at a focal length by engineering the phase shift of transmittance. We obtained a high focusing efficiency of 84.39% at a wavelength of 820 nm for disordered metalens structures. Amazingly, our proposed disordered metalens structures can mimic the optical properties of ordered metalens structures. Similar focusing efficiencies of disordered and ordered metalens structures were found in a wavelength range from 850 to 890 nm due to the long-range periodic pr

SUBMITTER: Islam O 

PROVIDER: S-EPMC11697373 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature