Zero-phase propagation in realistic plate-type acoustic metamaterials

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Show simple item record Mallejac, Matthieu Merkel, Aurélien Paul Lucien Sánchez Dehesa, José Christensen, Johan Tournat, Vincent Groby, Jean-Philippe Romero García, Vicent 2020-12-14T13:53:09Z 2020-12-14T13:53:09Z 2019-09-23
dc.identifier.bibliographicCitation Applied Physics Letters. (2019). 115(13), 134101, pp.: 1-5.
dc.identifier.issn 0003-6951
dc.description.abstract We theoretically, numerically, and experimentally analyze the Density-Near-Zero (DNZ) regime of a one-dimensional acoustic metamaterial. This acoustic metamaterial is composed of thin elastic plates periodically clamped in an air-filled waveguide, and the effective dynamic zero mass density is obtained from the strong dispersion around the bandgaps associated with the resonances of the plates. We emphasize the importance of the impedance mismatch between the acoustic metamaterial and the surrounding waveguide at the frequency of the zero effective density in addition to the consequences of the inherent losses. As a result, the frequency of the zero phase propagation, i.e., the acoustic propagation with zero phase delay, is not exactly the frequency of the zero density and lies in the frequency bandgap where the effective density is negative. Considering these limitations, the zero phase propagation is still experimentally observed and a subwavelength acoustic dipole is numerically designed, thus demonstrating the possible realistic implementations of DNZ acoustic metamaterials.
dc.description.sponsorship This article is based upon work from COST Action DENORMS CA15125, supported by COST (European Cooperation in Science and Technology). This work was funded by the Metaroom Project No. ANR-18-CE08-0021 and co-funded by ANR and RCG. J. Christensen acknowledges the support from the MINECO through a Ramón y Cajal grant (Grant No. RYC-2015-17156). J. Sánchez-Dehesa acknowledges the support from the Ministerio de Economía y Competitividad of the Spanish government and the European Union Fondo Europeo de Desarrollo Regional (FEDER) through Project No. TEC2014-53088-C3-1-R.
dc.format.extent 5
dc.language.iso eng
dc.publisher American Institute of Physics
dc.rights Published under license by AIP Publishing.
dc.subject.other Acoustic waves
dc.subject.other Wave mechanics
dc.subject.other Viscoelasticity
dc.subject.other Acoustic metamaterials
dc.subject.other Acoustic phenomena
dc.title Zero-phase propagation in realistic plate-type acoustic metamaterials
dc.type research article
dc.description.status Publicado
dc.subject.eciencia Física
dc.rights.accessRights open access
dc.relation.projectID Gobierno de España. RYC-2015-17156
dc.relation.projectID Gobierno de España. TEC2014-53088-C3-1-R
dc.identifier.publicationfirstpage 1
dc.identifier.publicationissue 13, 134101
dc.identifier.publicationlastpage 5
dc.identifier.publicationtitle APPLIED PHYSICS LETTERS
dc.identifier.publicationvolume 115
dc.identifier.uxxi AR/0000024623
dc.contributor.funder Ministerio de Economía y Competitividad (España)
dc.affiliation.dpto UC3M. Departamento de Física
dc.type.hasVersion VoR
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