Phononic crystals and acoustic metamaterials are periodic structures whose effective properties can be tailored at will to achieve extreme control on wave propagation. Their refractive index is obtained from the homogenization of the infinite periodic system, but it is possible to locally change the ...
J. Acoustic mirage in two-dimensional gradient-index phononic crystals. J. Appl. Phys. 106, 53529 (2009). Article Google Scholar Torrent, D. & Sánchezdehesa, J. Acoustic metamaterials for new two-dimensional sonic devices. New J. Phys. 9, 323 (2007). Article ADS Google Scholar Zig...
Directional acoustic source based on the resonant cavity of two-dimensional phononic crystals. Appl. Phys. Lett. 86, 224105 (2005). Article ADS Google Scholar Ke, M. et al. Highly directional acoustic wave radiation based on asymmetrical two-dimensional phononic crystal resonant cavity. Appl. ...
gradient-index phononic crystals2D phononic-crystal waveguidesolid scatterersepoxyWe report a novel approach to effectively couple acoustic energy into a two-dimensional phononic-crystal waveguide by an acoustic beamwidth compressor using the concept of a gradient-index phononic crystal (GRIN PC). The ...
Modeling phononic crystals via the weighted relaxed micromorphic model with free and gradient micro-inertia. Journal of Elasticity, 130(1):59-83, 2018.Angela Madeo, Manuel Collet, Marco Miniaci, K´evin Billon, Morvan Ouisse, and Patrizio Neff. Modeling phononic crystals via the weighted ...