Experimental evidence of zero-angle ...
Document type :
Compte-rendu et recension critique d'ouvrage
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
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 >
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
Source :
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