Gradient Index Devices for the Full Control of Elastic Waves in Plates

Jin, Yabin; Torrent, Daniel; Pennec (Admin), Yan; Pan, Yongdong; Djafari-Rouhani, Bahram

Type de document :

Compte-rendu et recension critique d'ouvrage

DOI :

10.1038/srep24437

Titre :

Gradient Index Devices for the Full Control of Elastic Waves in Plates

Auteur(s) :

Jin, Yabin [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
School of Aerospace Engineering and Applied Mechanics
Torrent, Daniel [Auteur]
Centre de Recherche Paul Pascal [CRPP]
Pennec (Admin), Yan [Auteur]

Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Pan, Yongdong [Auteur]
School of Aerospace Engineering and Applied Mechanics
Djafari-Rouhani, Bahram [Auteur]

Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]

Titre de la revue :

Scientific Reports

Éditeur :

Nature Publishing Group

Date de publication :

2016-04-14

ISSN :

2045-2322

Discipline(s) HAL :

Chimie/Polymères

Résumé en anglais : [en]

In this work, we present a method for the design of gradient index devices for elastic waves in plates. The method allows the design of devices to control the three fundamental modes, despite the fact that their dispersion ...
Lire la suite >In this work, we present a method for the design of gradient index devices for elastic waves in plates. The method allows the design of devices to control the three fundamental modes, despite the fact that their dispersion relation is managed by different elastic constants. It is shown that by means of complex graded phononic crystals and thickness variations it is possible to independently design the three refractive indexes of these waves, allowing therefore their simultaneous control. The effective medium theory required for this purpose is presented, and the method is applied to the design of the Luneburgand Maxwell lenses as well as to the design of a flat gradient index lens. Finally, numerical simulations are used to demonstrate the performance of the method in a broadband frequency region.Lire moins >

Langue :

Anglais

Vulgarisation :

Non

Collections :