声学超构材料  

Acoustic metamaterials

作　　者：柯满竹[1] 邱春印[1] 彭莎莎[1] 刘正猷[1] 

机构地区：[1]武汉大学物理科学与技术学院,武汉430072

出　　处：《物理》2012年第10期663-668,共6页Physics

基　　金：国家自然科学基金(批准号:10874131;50425206)资助项目

摘　　要：2000年报道的具有局域共振带隙的声学材料是声学超构材料的前身,也是最早实现的声学超构材料.同光学、电磁超构材料一样,近年来声学超构材料也引起了许多学者的研究兴趣.文章介绍了到目前为止声学超构材料的主要研究进展,内容包括含共振单元的声学超构材料的负有效声学参数(包括质量密度、体模量等)的实现,以及不含共振单元的声学超构材料的一些有效声学参数的确定等,最后对声学超构材料的可能应用进行了简单展望.Acoustic metamaterials, artificial structures with structural units much smaller than the operating wavelength and possessing unusual properties, were first reported in 2000, when they were called locally resonant sonic materials. Like electromagnetic metamaterials, acoustic metamaterials have also attracted much attention in recent years materials are reviewed, including the rea In this article, the main advances in the lization of negative acoustic parameters research of acoustic meta- by introducing local reso nances in the medium, and the determination of various acoustic parameters for metamaterials without local resonances. Finally, an overview is given of the prospects for potential applications.

关 键 词：声学超构材料 局域共振 亚波长 负质量密度 负模量 

分 类 号：TB34[一般工业技术—材料科学与工程]