Flute-model acoustic metamaterials with simultaneously negative bulk modulus and mass density

Hong Cheng Zeng, Chun Rong Luo, Huai Jun Chen, Shi Long Zhai, Chang Lin Ding, Xiao Peng Zhao

科研成果: 期刊稿件文章同行评审

28 引用 (Scopus)

摘要

We experimentally constructed a three-dimensional flute-model meta-molecule structure acoustic metamaterial (AM) from a periodic array of perforated hollow steel tubes (PHSTs) and investigated its transmission and reflection behaviors in an impedance tube system. The AM exhibited a peak and dip, and an inverse phase, thus exhibiting the local resonance of the PHSTs. Based on the homogeneous media theory, the effective bulk modulus and mass density of the AM were calculated to be simultaneously negative; the refractive index was also negative. PHST AM slab focusing experiments showed that the medium with a resonant structure exhibited a distinct metamaterial property.

源语言英语
页(从-至)14-18
页数5
期刊Solid State Communications
173
DOI
出版状态已出版 - 2013

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