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Title: Acoustic band gap formation in metamaterials
Authors: Elford, Daniel P.
Chalmers, Luke
Kusmartsev, F.V.
Swallowe, G.M.
Keywords: Acoustic metamaterials
Sonic crystals
Resonance band gaps
Issue Date: 2010
Publisher: © World Scientific Publishing Company
Citation: ELFORD, D.P. ... et al, 2010. Acoustic band gap formation in metamaterials. International Journal of Modern Physics B, 24 (25-26), pp. 4935-4945.
Abstract: We present several new classes of metamaterials and/or locally resonant sonic crystal that are comprised of complex resonators. The proposed systems consist of multiple resonating inclusion that correspond to different excitation frequencies. This causes 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’s lattice constant 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 proofing applications and furthermore the devices can be tailored to attenuate lower or higher frequency ranges, i.e. from seismic to ultrasonic.
Description: This is an electronic version of an article published in the International Journal of Modern Physics B [© World Scientific Publishing Company].
Version: Accepted for publication
DOI: 10.1142/S0217979210057110
URI: https://dspace.lboro.ac.uk/2134/7985
Publisher Link: http://dx.doi.org/10.1142/S0217979210057110
ISSN: 0217-9792
1793-6578
Appears in Collections:Published Articles (Physics)

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