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Locally Resonant Sonic Materials

Authors Liu, Zhengyou HKUST affiliated (currently or previously).
Zhang, Xixiang HKUST affiliated (currently or previously)
Mao, Yiwei HKUST affiliated (currently or previously).
Zhu, Yongyuan HKUST affiliated (currently or previously).
Yang, Zhi Yu View this author's profile
Chan, Che Ting View this author's profile
Sheng, Ping View this author's profile
Issue Date 2000
Source Science , v. 289, (5485), September 2000, p. 1734-1736
Summary We have fabricated sonic crystals, based on the idea of Localized resonant structures, that exhibit spectral gaps with a Lattice constant two orders of magnitude smaller than the relevant wavelength. Disordered composites made from such localized resonant structures behave as a material with effective negative elastic constants and a total wave reflector within certain tunable sonic frequency ranges. A 2-centimeter slab of this composite material is shown to break the conventional mass-density Law of sound transmission by one or more orders of magnitude at 400 hertz.
ISSN 0036-8075
Language English
Format Article
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