Gradient index phononic crystals and metamaterials

Jin, Yabin; Djafari-Rouhani, Bahram; Torrent, Daniel

Document type :

Compte-rendu et recension critique d'ouvrage

DOI :

10.1515/nanoph-2018-0227

Title :

Gradient index phononic crystals and metamaterials

Author(s) :

Jin, Yabin [Auteur]
School of Aerospace Engineering and Applied Mechanics
Djafari-Rouhani, Bahram [Auteur correspondant]

Physique - IEMN [PHYSIQUE - IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Torrent, Daniel [Auteur]
Universitat Jaume I = Jaume I University

Journal title :

Nanophotonics

Pages :

685-701

Publisher :

De Gruyter

Publication date :

2019-05

ISSN :

2192-8614

English keyword(s) :

gradient index
phononic crystals
metamaterials
lenses
homogenization

HAL domain(s) :

Sciences de l'ingénieur [physics]

English abstract : [en]

Abstract Phononic crystals and acoustic metamaterials are periodic structures whose effective properties can be tailored at will to achieve extreme control on wave propagation. Their refractive index is obtained from the ...
Show more >Abstract Phononic crystals and acoustic metamaterials are periodic structures whose effective properties can be tailored at will to achieve extreme control on wave propagation. Their refractive index is obtained from the homogenization of the infinite periodic system, but it is possible to locally change the properties of a finite crystal in such a way that it results in an effective gradient of the refractive index. In such case the propagation of waves can be accurately described by means of ray theory, and different refractive devices can be designed in the framework of wave propagation in inhomogeneous media. In this paper we review the different devices that have been studied for the control of both bulk and guided acoustic waves based on graded phononic crystals.Show less >

Language :

Anglais

Popular science :

Non

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