Sep 2026
Ultra-thin resonant Fresnel metalens for achromatic high-gain acoustic focusing
The classical Soret-type acoustic Fresnel zone plate suffers from two major drawbacks: severe chromatic aberration and low energy efficiency. This work proposes a Subwavelength High-gain Achromatic Resonant Plate with a thickness of only 0.43λ0: straight/coiled-up units achieve π phase complementarity and near-total tr...
Yu-Jiao Lei, Jun Yi, Meng-Xue Zhang et al.
· Applied Physics Letters · 0 citations