Title :

Experimental evidence of zero-angle refraction and acoustic wave-phase control in a two-dimensional solid/solid phononic crystal

Author(s) :

Vasseur, Jérôme [Auteur]
Acoustique - IEMN [ACOUSTIQUE - IEMN]
Morvan, B. [Auteur]
Laboratoire Ondes et Milieux Complexes [LOMC]
Tinel, A. [Auteur]
Laboratoire Ondes et Milieux Complexes [LOMC]
Swinteck, N. [Auteur]
Hladky, Anne-Christine [Auteur]
Acoustique - IEMN [ACOUSTIQUE - IEMN]
Deymier, P.A. [Auteur]
University of Arizona

Journal title :

Physical Review B: Condensed Matter and Materials Physics (1998-2015)

Pages :

134305

Publisher :

American Physical Society

Publication date :

2012

ISSN :

1098-0121

HAL domain(s) :

Physique [physics]/Mécanique [physics]/Acoustique [physics.class-ph]

English abstract : [en]

The square symmetry of the equifrequency contour of longitudinal waves in a solid/solid two-dimensional phononic crystal (PC) is shown through numerical calculations and experiments to lead to peculiar propagation phenomena. ...
Show more >The square symmetry of the equifrequency contour of longitudinal waves in a solid/solid two-dimensional phononic crystal (PC) is shown through numerical calculations and experiments to lead to peculiar propagation phenomena. A slab of steel/epoxy PC immersed in water refracts incident longitudinal waves by an angle of zero degrees. The waves propagate along the shortest path between the slab faces. This characteristic enables the superposition within the same volume of the PC of waves with different incidence angles. Two incident waves with symmetrical incident angles can interfere constructively or destructively inside the PC depending on their initial phase difference. This phase difference is shown to enable control of wave propagation through the PC.Show less >

Language :

Anglais

Popular science :

Non

Collections :

• Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL