Revealing hidden periodicity in momentum-encoded metasurfaces
Seokwoo Kim, Jongha Yoon, Minsu Jeong, Joohoon Kim, Jihae Lee, Minseok Choi, Dongmin Jeon, Geon Lee, Kyungtae Kim, Junsuk Rho · 2026
Read Revealing hidden periodicity in momentum-encoded metasurfaces by Seokwoo Kim, Jongha Yoon, Minsu Jeong, Joohoon Kim, Jihae Lee, Minseok Choi, Dongmin Jeon, Geon Lee, Kyungtae Kim, Junsuk Rho (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/pmc-13396163.txt.
Description
Kim and co-authors present, in 2026, a geometric framework for metasurfaces, flat patterned materials that steer light and other waves. Many designs encode a momentum profile across the surface, which breaks the regular pattern that makes analysis tractable. The team shows such surfaces can be read as Moiré lattices, formed by laying a 1D periodic layer over a 2D Bravais lattice, the standard grid types of crystallography.
From that picture they derive conditions, rules for when the combined pattern repeats, exposing hidden order in seemingly random structures. Each surface can then be redrawn as a compact superlattice, which sorts its radiation into defined diffraction orders. The framework matched 2D sampling theory for local metasurfaces and pinned down rules for spin-dependent designs. Experiments on fabricated photonic crystal slabs confirmed the predicted valley addressability, a way of routing waves by valley index.
Catalog record
| CREATOR | Seokwoo Kim, Jongha Yoon, Minsu Jeong, Joohoon Kim, Jihae Lee, Minseok Choi, Dongmin Jeon, Geon Lee, Kyungtae Kim, Junsuk Rho |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 39 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |