META 2021, META'12

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Anomalous behavior of overlapping hybridization and Bragg gaps due to coupling between scattering resonances
John Hilton Page, Charles Croenne, Eric Jinser Lee

Last modified: 2011-12-30


The coupling between scattering resonances underlie many of the key properties of acoustic metamaterials. To study such effects, phononic crystals of nylon rods in a water matrix, exhibiting both hybridization and Bragg gaps around 1MHz, are investigated numerically and experimentally. The interaction between the two phenomena is tuned via the elastic properties of nylon, the lattice constant and the sample thickness. Atypical dispersion characteristics are found near resonance and are attributed to the interaction between the resonant states of the rods.


acoustic metamaterials; phononic crystals; hybridization gaps