- -

Transparent Gradient-Index Lens for Underwater Sound Based on Phase Advance

RiuNet: Institutional repository of the Polithecnic University of Valencia

Share/Send to

Cited by

Statistics

Transparent Gradient-Index Lens for Underwater Sound Based on Phase Advance

Show simple item record

Files in this item

dc.contributor.author Martin, Theodore P. es_ES
dc.contributor.author Naify, C.J. es_ES
dc.contributor.author Skerritt, E.A. es_ES
dc.contributor.author Layman, C.N. es_ES
dc.contributor.author Nicholas, M. es_ES
dc.contributor.author Calvo, D.C. es_ES
dc.contributor.author Orris, Gregory J es_ES
dc.contributor.author Torrent Martí, Daniel es_ES
dc.contributor.author Sánchez-Dehesa Moreno-Cid, José es_ES
dc.date.accessioned 2016-07-05T07:13:48Z
dc.date.available 2016-07-05T07:13:48Z
dc.date.issued 2015-09-15
dc.identifier.issn 2331-7019
dc.identifier.uri http://hdl.handle.net/10251/67075
dc.description.abstract Spatial gradients in a refractive index are used extensively in acoustic metamaterial applications to control wave propagation through phase delay. This study reports the design and experimental realization of an acoustic gradient-index lens using a sonic crystal lattice that is impedance matched to water over a broad bandwidth. In contrast to previous designs, the underlying lattice features refractive indices that are lower than the water background, which facilitates propagation control based on a phase advance as opposed to a delay. The index gradient is achieved by varying the filling fraction of hollow, air-filled aluminum tubes that individually exhibit a higher sound speed than water and matched impedance. Acoustic focusing is observed over a broad bandwidth of frequencies in the homogenization limit of the lattice, with intensity magnifications in excess of 7 dB. An anisotropic lattice design facilitates a flat-faceted geometry with low backscattering at 18 dB below the incident sound-pressure level. A three-dimensional Rayleigh-Sommerfeld integration that accounts for the anisotropic refraction is used to accurately predict the experimentally measured focal patterns. es_ES
dc.description.sponsorship This work is supported by the Office of Naval Research. en_EN
dc.language Inglés es_ES
dc.publisher American Physical Society es_ES
dc.relation This work is supported by the Office of Naval Research. es_ES
dc.relation.ispartof Physical Review Applied es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Gradient index lens es_ES
dc.subject.classification ESTADISTICA E INVESTIGACION OPERATIVA es_ES
dc.subject.classification TECNOLOGIA ELECTRONICA es_ES
dc.title Transparent Gradient-Index Lens for Underwater Sound Based on Phase Advance es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1103/PhysRevApplied.4.034003
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Ingeniería Electrónica - Departament d'Enginyeria Electrònica es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Estadística e Investigación Operativa Aplicadas y Calidad - Departament d'Estadística i Investigació Operativa Aplicades i Qualitat es_ES
dc.description.bibliographicCitation Martin, TP.; Naify, C.; Skerritt, E.; Layman, C.; Nicholas, M.; Calvo, D.; Orris, GJ.... (2015). Transparent Gradient-Index Lens for Underwater Sound Based on Phase Advance. Physical Review Applied. 4(3):034003-1-034003-8. doi:10.1103/PhysRevApplied.4.034003 es_ES
dc.description.accrualMethod Senia es_ES
dc.relation.publisherversion http://dx.doi.org/10.1103/PhysRevApplied.4.034003 es_ES
dc.description.upvformatpinicio 034003-1 es_ES
dc.description.upvformatpfin 034003-8 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 4 es_ES
dc.description.issue 3 es_ES
dc.relation.senia 305233 es_ES


This item appears in the following Collection(s)

Show simple item record