期刊
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
卷 106, 期 4, 页码 807-811出版社
SPRINGER
DOI: 10.1007/s00339-011-6682-8
关键词
-
资金
- National Natural Science Foundation of China [50872113, 50936002, 11174234]
- National Key Scientific Program of China [2012CB921503]
A tunable negative modulus metamaterial is presented, and it is achieved by adjusting the medium density and an effective volume of a split hollow sphere (SHS). This work comprises experimental and numerical studies. The effects of water/air component and the steel ball on the transmission properties were investigated in the impedance tube system. The experimental results show that the transmission dip has a significant blue-shift with increasing water content, whereas the steel ball has a relatively small influence on the resonant frequency. The simulated results by the finite-element method (FEM) are in agreement with the experimental results. Based on medium parameters among the SHS, acoustic metamaterial (AM) with negative modulus can easily be designed in the expected frequency domain, and it provides a convenient route to tune AMs.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据