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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Main Authors:	Martin Lott, Philippe Roux, Matthieu Rupin, Daniel Colquitt, Andrea Colombi
Format:	article
Language:	EN
Published:	Nature Portfolio 2021
Subjects:	Medicine R Science Q
Online Access:	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
work_keys_str_mv	AT martinlott negativeindexmetamaterialthroughmultiwaveinteractionsnumericalproofoftheconceptoflowfrequencylambwavemultiplexing AT philipperoux negativeindexmetamaterialthroughmultiwaveinteractionsnumericalproofoftheconceptoflowfrequencylambwavemultiplexing AT matthieurupin negativeindexmetamaterialthroughmultiwaveinteractionsnumericalproofoftheconceptoflowfrequencylambwavemultiplexing AT danielcolquitt negativeindexmetamaterialthroughmultiwaveinteractionsnumericalproofoftheconceptoflowfrequencylambwavemultiplexing AT andreacolombi negativeindexmetamaterialthroughmultiwaveinteractionsnumericalproofoftheconceptoflowfrequencylambwavemultiplexing
_version_	1718387360579715072

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

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