标题:
声学超材料研究进展The Research Progress of Acoustic Metamaterials
作者:
刘红星, 吴九汇, 张思文, 沈礼
关键字:
声学超材料, 等效质量密度, 等效模量, 局域共振 Acoustic Metamaterials; Effective Mass Density; Effective Modulus; Local Resonance
期刊名称:
《Open Journal of Acoustics and Vibration》, Vol.1 No.2, 2013-06-20
摘要:
声学超材料是人工制造的一种复合结构。由于它结构尺寸单元远小于声波波长，具有很多自然材料所不具备的特殊性质，极大地扩展了声学材料的内涵及其应用领域。文章介绍了近年来声学超材料的主要研究进展，包括负等效声学参数(负等效质量密度及负等效模量)超材料及隐身超材料的实现方法及思路，并对声学超材料的研究做了总结和展望。Acoustic metamaterials are artificially fabricated materials. Because their structural unit sizes are smaller than the acoustic wavelength, they exhibit exotic characteristics beyond those found in nature, which expand acoustic materials and their application fields. In this article, the main advances in the research of acoustic metamaterials are reviewed, including the realization of negative effective acoustic parameters which provide possibilities to research the special nature of the acoustics. An overview is given for the development of the acoustic cloak, and discusses the possible development of acoustic metamaterials.