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arXiv · 2301.09895

The emergence of low-frequency dual Fano resonances in chiral twisting metamaterials

Brahim Lemkalli·Muamer Kadic·Youssef El Badri·Sébastien Guenneau·Abdellah Mir·Younes Achaoui
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Abstract

In the current work, through a finite element analysis, we demonstrate that a configuration of chiral cells having syndiotactic symmetry provides dual Fano resonances at low frequency. From the phononic dispersion and transmission response, we compare the signature provided by a composite made of chiral cells to the ones of homogeneous medium, isotactic nonchiral, and isotactic chiral beams. The study results in an innovative design of a mechanical metamaterial that induces the Fano resonance at low frequency with a relatively high quality factor. This might be a significant step forward for mechanical wave filtering and detection. Performances have been evaluated using a sensor that will be implemented as a thermometer.

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Brahim Lemkalli, Muamer Kadic, Youssef El Badri, Sébastien Guenneau, Abdellah Mir, Younes Achaoui. 2023-01-24. The emergence of low-frequency dual Fano resonances in chiral twisting metamaterials. https://doi.org/10.1016/j.wavemoti.2024.103302

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