Negative index metamaterial through multi-wave interactions: numerical proof of the concept of low-frequency Lamb-wave multiplexing

Abstract We study numerically the potential of a multimodal elastic metamaterial to filter and guide Lamb waves in a plate. Using a sub-wavelength array of elongated beams attached to the plate, and combining the coupling effects of the longitudinal and flexural motion of these resonators, we create...

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Autores principales: Martin Lott, Philippe Roux, Matthieu Rupin, Daniel Colquitt, Andrea Colombi
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Publicado: Nature Portfolio 2021
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Acceso en línea:https://doaj.org/article/ee8c09a91b3845fda477c29a69939dc5
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spelling oai:doaj.org-article:ee8c09a91b3845fda477c29a69939dc52021-12-02T15:23:00ZNegative index metamaterial through multi-wave interactions: numerical proof of the concept of low-frequency Lamb-wave multiplexing10.1038/s41598-020-79572-92045-2322https://doaj.org/article/ee8c09a91b3845fda477c29a69939dc52021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-79572-9https://doaj.org/toc/2045-2322Abstract We study numerically the potential of a multimodal elastic metamaterial to filter and guide Lamb waves in a plate. Using a sub-wavelength array of elongated beams attached to the plate, and combining the coupling effects of the longitudinal and flexural motion of these resonators, we create narrow transmission bands at the flexural resonances of the beams inside the wide frequency bandgap induced by their longitudinal resonance. The diameter of the beams becomes the tuning parameter for selection of the flexural leakage frequency, without affecting the main bandgap. Finally, by combination of the monopolar and dipolar scattering effects associated with the coupled beam and plate system, we create a frequency-based multiplexer waveguide in a locally resonant metamaterial.Martin LottPhilippe RouxMatthieu RupinDaniel ColquittAndrea ColombiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Martin Lott
Philippe Roux
Matthieu Rupin
Daniel Colquitt
Andrea Colombi
Negative index metamaterial through multi-wave interactions: numerical proof of the concept of low-frequency Lamb-wave multiplexing
description Abstract We study numerically the potential of a multimodal elastic metamaterial to filter and guide Lamb waves in a plate. Using a sub-wavelength array of elongated beams attached to the plate, and combining the coupling effects of the longitudinal and flexural motion of these resonators, we create narrow transmission bands at the flexural resonances of the beams inside the wide frequency bandgap induced by their longitudinal resonance. The diameter of the beams becomes the tuning parameter for selection of the flexural leakage frequency, without affecting the main bandgap. Finally, by combination of the monopolar and dipolar scattering effects associated with the coupled beam and plate system, we create a frequency-based multiplexer waveguide in a locally resonant metamaterial.
format article
author Martin Lott
Philippe Roux
Matthieu Rupin
Daniel Colquitt
Andrea Colombi
author_facet Martin Lott
Philippe Roux
Matthieu Rupin
Daniel Colquitt
Andrea Colombi
author_sort Martin Lott
title Negative index metamaterial through multi-wave interactions: numerical proof of the concept of low-frequency Lamb-wave multiplexing
title_short Negative index metamaterial through multi-wave interactions: numerical proof of the concept of low-frequency Lamb-wave multiplexing
title_full Negative index metamaterial through multi-wave interactions: numerical proof of the concept of low-frequency Lamb-wave multiplexing
title_fullStr Negative index metamaterial through multi-wave interactions: numerical proof of the concept of low-frequency Lamb-wave multiplexing
title_full_unstemmed Negative index metamaterial through multi-wave interactions: numerical proof of the concept of low-frequency Lamb-wave multiplexing
title_sort negative index metamaterial through multi-wave interactions: numerical proof of the concept of low-frequency lamb-wave multiplexing
publisher Nature Portfolio
publishDate 2021
url https://doaj.org/article/ee8c09a91b3845fda477c29a69939dc5
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AT matthieurupin negativeindexmetamaterialthroughmultiwaveinteractionsnumericalproofoftheconceptoflowfrequencylambwavemultiplexing
AT danielcolquitt negativeindexmetamaterialthroughmultiwaveinteractionsnumericalproofoftheconceptoflowfrequencylambwavemultiplexing
AT andreacolombi negativeindexmetamaterialthroughmultiwaveinteractionsnumericalproofoftheconceptoflowfrequencylambwavemultiplexing
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