META 2021, META'12

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Flat lens for Lamb waves focusing
Marc Dubois, Patrick Sebbah, Sébastien Guenneau, Nicolas Etaix, Ros Kiri Ing, Mohamed Farhat, Stefan Enoch

Last modified: 2011-12-30

Abstract


Flat lens concept proposed in 1968 by V.G. Veselago is extended to surface acoustic waves on a thin plate. A 52°-tilted square lattice of circular holes drilled in a Duraluminium plate has been chosen to experimentally demonstrate focusing of flexural waves.

Keywords


Phononic crystals, negative refraction, Lamb waves