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Article Dans Une Revue Physical Review B Année : 2020

Doping of a plate-type acoustic metamaterial

Résumé

We theoretically, numerically, and experimentally investigate the feasibility of acoustic doping, i.e., changing one of the effective properties of a medium by adding an impurity, to achieve supersqueezing. This effect, characterized by perfect and zero-phase transmission, can be obtained with zero index media. In acoustics, zero-phase propagation can be achieved with a plate-type acoustic metamaterial (PAM) acting as a density-near- zero metamaterial (DNZ). We point out the possibility of modifying the compressibility of a DNZ medium by mounting a Helmholtz resonator in parallel with the PAM. We are then able to dope the system and to turn it into a density-and-compressibility-near-zero medium, thus allowing supersqueezing.
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Dates et versions

hal-03070290 , version 1 (22-12-2020)

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M. Malléjac, Aurélien Merkel, V. Tournat, J.-P. Groby, V. Romero-Garcia. Doping of a plate-type acoustic metamaterial. Physical Review B, 2020, 102 (6), ⟨10.1103/PhysRevB.102.060302⟩. ⟨hal-03070290⟩
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