Perfect all-angle asymmetric transmission via normal susceptibilities: exact spatial derivative by local meta-atoms and nonlocal metasurfaces [Invited]
Abstract
We present a systematic methodology for realizing accurate asymmetric all-angle transmission in nonlocal metasurfaces. As a representative example, we derive closed-form susceptibility conditions for exact first-order spatial differentiation of unity numerical aperture, clarifying the role of each underlying balance. We provide rigorous and detailed designs of physically meaningful structures that directly feature such susceptibilities: a conceptual local meta-atom and a realistic nonlocal multilayered printed circuit board (PCB). Importantly, the latter leverages an intricate system of nearfield coupling beyond standard homogenization. Validated in simulations, our results provide a general and modular route to high-resolution asymmetric nonlocal metasurfaces for optical analog processing.
Fields of Study & Subjects
Metamaterials and Metasurfaces Applications
Plasmonic and Surface Plasmon Research
Photonic Crystals and Applications
Publication details
- Journal / source
- Optical Materials Express
- Publisher
- Optica Publishing Group
- Volume
- 16
- Issue
- 6
- Pages
- 1740–1740
- Publication date
- 11 May 2026
- Language
- EN