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Article Dans Une Revue Applied Physics Letters Année : 2010

Negative refraction of zero order flexural Lamb waves through a two-dimensional phononic crystal

Résumé

We investigate experimentally the refraction of antisymmetric Lamb waves at frequencies in the second band of a two-dimensional phononic crystal. The heterostructure is made of a square lattice of air inclusions in a silicon plate. Our experimental scheme is based on the selective generation of narrow band elastic waves at a few megahertz. Both positive and negative refractions are observed. The comparison of our data with computed dispersion curves shows very good agreement
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hal-00549436 , version 1 (30-05-2022)

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Juliette Pierre, Olga Boyko-Kazymyrenko, Laurent Belliard, Jerome O. Vasseur, Bernard Bonello. Negative refraction of zero order flexural Lamb waves through a two-dimensional phononic crystal. Applied Physics Letters, 2010, 97 (12), pp.121919. ⟨10.1063/1.3491290⟩. ⟨hal-00549436⟩
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