W-shaped Broadband Attenuation of Longitudinal Waves through Composite Elastic Metamaterial
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arXiv
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| Autori principali: | , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866909555772882944 |
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| author | Lemkalli, B. Dudek, K. K. Kadic, M. Ji, Q. Guenneau, S. Mir, A. Achaoui, Y. |
| author_facet | Lemkalli, B. Dudek, K. K. Kadic, M. Ji, Q. Guenneau, S. Mir, A. Achaoui, Y. |
| contents | We investigate a composite elastic meta-slab with exceptional transmission properties, particularly the presence of a W-shaped bandgap. A comprehensive study, utilizing experimental measurements, the finite element method, and an analytical approach, identifies this specific bandgap. The meta-slab design involves cutting an array of composite materials arranged in parallel with strategically placed incisions. This configuration ensures that the materials between the slits act as plate-like waveguides within the surrounding medium. The incorporation of steel into ABS-based Fabry-Perot cavities induces a notable coupling effect between longitudinal waves and localized modes traversing the structure, leading to the formation of two distinct Fabry-Perot resonators. These coupling effects generate a series of resonances and antiresonances, ultimately producing the W-band gap through the interaction of two symmetric Fano resonances. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_21786 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | W-shaped Broadband Attenuation of Longitudinal Waves through Composite Elastic Metamaterial Lemkalli, B. Dudek, K. K. Kadic, M. Ji, Q. Guenneau, S. Mir, A. Achaoui, Y. Optics Materials Science We investigate a composite elastic meta-slab with exceptional transmission properties, particularly the presence of a W-shaped bandgap. A comprehensive study, utilizing experimental measurements, the finite element method, and an analytical approach, identifies this specific bandgap. The meta-slab design involves cutting an array of composite materials arranged in parallel with strategically placed incisions. This configuration ensures that the materials between the slits act as plate-like waveguides within the surrounding medium. The incorporation of steel into ABS-based Fabry-Perot cavities induces a notable coupling effect between longitudinal waves and localized modes traversing the structure, leading to the formation of two distinct Fabry-Perot resonators. These coupling effects generate a series of resonances and antiresonances, ultimately producing the W-band gap through the interaction of two symmetric Fano resonances. |
| title | W-shaped Broadband Attenuation of Longitudinal Waves through Composite Elastic Metamaterial |
| topic | Optics Materials Science |
| url | https://arxiv.org/abs/2503.21786 |