Nonlocal interaction engineering of 2D roton-like dispersion relations in acoustic and mechanical metamaterials
oleh: Ke Wang, Yi Chen, Muamer Kadic, Changguo Wang, Martin Wegener
| Format: | Article |
|---|---|
| Diterbitkan: | Nature Portfolio 2022-05-01 |
Deskripsi
Long-range interactions have often been considered as a nuisance or correction to the desired features of metamaterials. Here, nonlocal interactions in 2D acoustic metamaterials are instead exploited as a tool to engineer peculiar wave dispersions, such as multiple roton-like minima, leading to negative and triple refraction.