ArticleNanophotonics (Berlin, Germany)2026
Low-Frequency, Ultra-Thin and Ultra-Wideband Meta-Absorber via Resonance Enhancement Harnessing Magnetic Material.
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
Achieving efficient, ultra-thin, and broadband absorption in the low-frequency regime (e.g., P to S bands, 0.23-4 GHz) remains a significant challenge due to the inherent limitations of conventional materials and designs. To address this, we propose a composite metamaterial absorber that synergistically integrates a three-layer metasurface absorber (TLMA) with a top-loaded magnetic material (MM) layer. The standalone TLMA achieves perfect absorption (> 90%) but within a narrow 300 MHz band around 0.77 GHz. The introduction of the MM layer drastically enhances and broadens the resonant response through magnetic loss and optimized coupling, yielding an ultra-wide absorption bandwidth from 0.5 to 3.8 GHz, which effectively covers the P, L, and S bands. The final optimized structure exhibits a remarkable overall thickness of only 41.0 mm (0.068
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