【作者】 夏建平； 张晓婷； 孙宏祥；

【Author】 XIA Jian-ping;ZHANG Xiao-ting;SUN Hong-xiang;Faculty of Science, Jiangsu University;

【机构】 江苏大学理学院；

【摘要】 本文提出一种新型宽频带声超纤维簇。声超纤维簇不仅结构简单,灵活可调,还具有宽频带、高透射率、无共振能量损耗及透射声波波阵面不变等优点。此外,声超纤维单元可以对声波产生覆盖整个2π范围的相位延迟,从而实现声波阵面的任意复杂调制。基于上述性能,利用声超纤维簇分别实现声隐身及声负折射效应。声超纤维簇可在宽频带范围内同时实现声学超材料和声学超表面的功能,为设计具有广泛应用的新型声学器件提供新思路。更多还原

【Abstract】 We propose a new type of broadband acoustic metafiber bundle. The metafiber bundle is the simple, flexible and tunable, and has the advantages of the broad bandwidth, high transmission, no resonance-induced energy loss and unchangeable output wavefront. In addition, the acoustic metafiber could steer a local phase shift that spans a full 2π range, which achieves arbitrary complex modulations of acoustic wavefronts. Based on the above performances, the acoustic invisibility and acoustic negative refraction effects are realized by the acoustic metafiber bundle. The acoustic metafiber bundle has the multifunctionality of both acoustic metamaterials and metasurfaces in a broad bandwidth, which provides new concepts to the design of novel acoustic devices with versatile applications.更多还原