Synthesized dispersion-engineered elastic metasurfaces for achromatic focusing and harvesting across the audible to ultrasound ranges.

ABSTRACT: Metasurfaces have garnered significant attention for unnatural abilities to modulate waves across various physics domains, including elastics. However, existing elastic metasurfaces are limited to narrowband operations due to chromatic aberrations; moreover, these exhibit highly discrete phase profiles due to the empty spaces required for each meta-atom to function as an individual waveguide. Herein, to address these, we propose a synthesized dispersion engineering that compensates for higher-order wave dispersion, and considers both diffraction and refraction. This approach allows for the design of an elastic metasurface with achromatic focusing capability across an ultrabroadband range, from audible to ultrasound frequencies. By exploiting Kirchhoff-Love plate theory, we demonstrate achr

SUBMITTER: Lee G 

PROVIDER: S-EPMC12067216 | biostudies-literature | 2025 May

REPOSITORIES: biostudies-literature