Acoustic band gap formation in metamaterials

D. P. Elford, L. Chalmers, F. Kusmartsev, G. M. Swallowe

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

1 Scopus citations


We present several new classes of metamaterials and/or locally resonant sonic crystal that are comprised of complex resonators. The proposed systemSoconsist of multiple resonating inclusion that correspond to diferent excitation frequencies. ThiSocauses the formation of multiple overlapped resonance band gaps.We demonstrate theoretically and experimentally that the individual band gaps achieved, span a far greater range (2kHz) than previously reported cases. The position and width of the band gap is independent of the crystal’Soconstant and forms in the low frequency regime significantly below the conventional Bragg band gap. The broad envelope of individual resonance band gaps is attractive for sound proog applications and furthermore the deviceSocan be tailored to attenuate lower or higher frequency ranges, i.e., from seismic to ultrasonic.

Original languageBritish English
Title of host publicationCondensed Matter Theories
Number of pages11
ISBN (Electronic)9789814340793
StatePublished - 1 Jan 2011


  • Acoustic metamaterials
  • Resonance band gaps
  • Sonic crystals


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