Extraordinary sound transmission through density-near-zero ultranarrow channels.

  title={Extraordinary sound transmission through density-near-zero ultranarrow channels.},
  author={R. Fleury and A. Al{\'u}},
  journal={Physical review letters},
  volume={111 5},
  • R. Fleury, A. Alú
  • Published 2013
  • Medicine, Physics
  • Physical review letters
  • We introduce the acoustic equivalent of "supercoupling" by studying the anomalous sound transmission and uniform energy squeezing through ultranarrow acoustic channels filled with zero-density metamaterials. As a realistic example, we propose their realization by inserting transverse membranes with a subwavelength period along the channel, and we prove a novel form of acoustic tunneling based on impedance matching and infinite phase velocity at the zero-density operation. We envision… CONTINUE READING

    Topics from this paper.

    Acoustic metasurface with hybrid resonances.
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