Acoustic wave transparency for a multilayered sphere with acoustic metamaterials

被引：40

作者：

Zhou, Xiaoming ^{[1
]}

Hu, Gengkai ^{[1
]}

机构：

[1] Beijing Inst Technol, Sch Sci, Beijing 100081, Peoples R China

来源：

PHYSICAL REVIEW E | 2007年 / 75卷 / 04期

关键词：

NEGATIVE REFRACTION; SCATTERING; CRYSTALS;

D O I：

10.1103/PhysRevE.75.046606

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

By analogy with the electromagnetic wave, the acoustic transparency phenomenon is analyzed for a multilayered sphere with acoustic metamaterials. The neutral-inclusion concept is used to predict the transparency conditions in the quasistatic case, which are further confirmed by a full-wave analysis. The mechanism of the transparency is based on lowering the total-scattering cross section of the composite sphere. It is found that, to improve the transparency, the angle-dependent scattering cross section must also be minimized for all directions.

引用

页数：7

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