期刊
JOURNAL OF APPLIED PHYSICS
卷 118, 期 9, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4929569
关键词
-
资金
- National Natural Science Foundation of China [11174234, 51272215]
- National Key Scientific Program of China [2012CB921503]
A two-dimensional (2D) acoustic metamaterial (AM) with negative effective mass density in water is designed by periodically arranging hollow tube meta-atoms. Experimental and simulated results demonstrate that transmission dips accompanied with inverse phases are presented in the transmission spectra of the 2D AM at the ultrasonic frequency band. Effective parameters extracted from the experimental measured transmission and reflection coefficients of the 2D AM show that the effective mass density and refractive index are negative near the dip frequency range of 35.31-35.94 kHz. The simulation also shows the negative response in the 2D AM. Due to the excellent properties, the 2D AM is appealing for the potential applications in areas such as subwave-length imaging, ultrasonic cloaking in water, and so on. (C) 2015 AIP Publishing LLC.
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