Collimated beam formation in 3D acoustic sonic crystals
A L Vanel,
M Dubois,
C Tronche
et al.
Abstract:We demonstrate strongly collimated beam forming, at audible frequencies, in a three-dimensional acoustic phononic crystal where the wavelength is commensurate with the crystal elements; the crystal is a seemingly simple rectangular cuboid constructed from closely-spaced spheres, and yet demonstrates rich wave phenomena acting as a canonical three-dimensional metamaterial. We employ theory, numerical
simulation and experiments to design and interpret this collimated beam phenomenon and use a crystal con… Show more
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