English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/92292
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Negative refraction and backward waves in layered acoustic metamaterials

AuthorsChristensen, Johan ; García de Abajo, Francisco Javier
Issue Date2012
PublisherAmerican Physical Society
CitationPhysical Review B 86: 024301 (2012)
AbstractWe investigate layered acoustic metamaterials capable of exhibiting a wide variety of wave propagation phenomena, including backward and forward waves with and without negative refraction. The metamaterials are formed by periodically perforated hard plates, which we describe analytically in the limit of small holes compared to both the period and the separation between plates. In particular, we derive expressions for the index of refraction and the transmission and reflection coefficients of finite slabs. We provide illustrative examples of near fields for all four combinations of backward and forward waves with and without negative refraction, along with dispersion diagrams that explain the observed behavior. A comprehensive study of the range of geometrical parameters in which these distinct phenomena are observed is presented as well. These metamaterials hold great promise for achieving full control of sound using simple structures, with potential application to acoustic technologies relying on subwavelength control and imaging of sound. © 2012 American Physical Society.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevB.86.024301
URIhttp://hdl.handle.net/10261/92292
DOI10.1103/PhysRevB.86.024301
Identifiersdoi: 10.1103/PhysRevB.86.024301
issn: 1098-0121
e-issn: 1550-235X
Appears in Collections:(IQFR) Artículos
Files in This Item:
File Description SizeFormat 
Negative refraction.pdf1,71 MBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.