ArticleNanophotonics (Berlin, Germany)2026
Band-Selective, Low-Dispersion Terahertz Attenuators Based on 3D Bulk Metamaterials Leveraging De-latticed Cross-Bar Resonator Ensembles.
Article in Nanophotonics (Berlin, Germany), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Terahertz (THz) optical components for power attenuation and dispersion management require materials that provide isotropic and band-selective control of electromagnetic waves. However, two-dimensional (2D) metasurfaces based on coherent lattice coupling exhibit polarization anisotropy and angular dispersion, which lead to phase distortion. Here, three-dimensional (3D) bulk metamaterials (MMs) functioning as THz attenuators are proposed and experimentally demonstrated based on a de-latticing strategy inspired by amorphous natural materials. Periodic arrays of cross-bar meta-atoms are encapsulated by cyclo-olefin polymer (COP) as randomly oriented cubic meta-grains and dispersed within a COP matrix, forming an amorphous composite that eliminates in-plane coherence. The fabricated samples exhibit band-selective and thickness-tunable attenuation with a smooth refractive-index variation across 0.3-0.4 THz. Compared with the 2D metasurface, the dispersion slope
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