Acoustic metamaterials: From local resonances to broad horizons.
Acoustic metamaterials: From local resonances to broad horizons.
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DOI：
10.1126/sciadv.1501595
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发表时间：
2016-02
期刊：
影响因子：
13.6
通讯作者：
Sheng P
中科院分区：
文献类型：
--
作者：
Ma G;Sheng P
从声学超材料的物理特性和新功能出发，综述了声学超材料的发展。在15年的时间跨度内，声学超材料已经从学术好奇心中脱颖而出，成为一个由科学发现和各种应用潜力驱动的活跃领域。本文回顾了声学超材料的发展，从局部共振结构中的质量密度和体积模量频率分散的最初发现到负本构参数值的角度所提供的各种功能，以及它们对声波行为的影响。我们调查了最近的发展，其中包括紧凑的相位操纵结构，超吸收，和主动可控的超材料，以及在运动的流体，弹性和机械的超材料，石墨烯激发的超材料，和结构的声波传输的新方向，其特征是最好的非厄米哈密顿描绘。许多新颖的声学超材料结构已经超越了超材料的原始定义，因为超材料是由组成共振单元的集体表现产生的，但是它们继续将波操纵功能扩展到自然界中发现的那些功能之外。
A review of the development of acoustic metamaterials, guided by their physical characteristics and novel functionalities. Within a time span of 15 years, acoustic metamaterials have emerged from academic curiosity to become an active field driven by scientific discoveries and diverse application potentials. This review traces the development of acoustic metamaterials from the initial findings of mass density and bulk modulus frequency dispersions in locally resonant structures to the diverse functionalities afforded by the perspective of negative constitutive parameter values, and their implications for acoustic wave behaviors. We survey the more recent developments, which include compact phase manipulation structures, superabsorption, and actively controllable metamaterials as well as the new directions on acoustic wave transport in moving fluid, elastic, and mechanical metamaterials, graphene-inspired metamaterials, and structures whose characteristics are best delineated by non-Hermitian Hamiltonians. Many of the novel acoustic metamaterial structures have transcended the original definition of metamaterials as arising from the collective manifestations of constituent resonating units, but they continue to extend wave manipulation functionalities beyond those found in nature.