Observation of unidirectional negative refraction in an acoustic metafluid prism

被引：9

作者：

Li, Kun ^{[1
]}

Peng, Yu-Gui ^{[2
]}

Zhu, Xue-Feng ^{[2
]}

Zhang, Jin-Tao ^{[1
]}

Lv, Hou-Jun ^{[1
]}

Liu, Sheng-Chun ^{[1
]}

机构：

[1] Heilongjiang Univ, Coll Phys Sci & Technol, Harbin 150080, Peoples R China

[2] Huazhong Univ Sci & Technol, Wuhan 430074, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2014年 / 104卷 / 04期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.4863418

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We theoretically and experimentally demonstrate the unidirectional negative refraction in an acoustic metafluid prism. The acoustic metafluid is designed to be uniaxial and highly anisotropic in inertia. Since the directions of phase and group velocities do not coincide in the anisotropic medium, it is possible to realize the unidirectional negative refraction by the broken symmetry of phase velocity vectors with respect to the acoustic axis. Being a distinct case of the asymmetric sound propagation, the unidirectional negative refracting effect could be potentially significant in various areas such as underwater sensing, and medical ultrasonics. (C) 2014 AIP Publishing LLC.

引用

页数：4

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