Metamaterial with simultaneously negative bulk modulus and mass density

被引：525

作者：

Ding, Yiqun

Liu, Zhengyou ^{[1
]}

Qiu, Chunyin

Shi, Jing

机构：

[1] Wuhan Univ, Minist Educ, Key Lab Acoust & Photon Mat & Devices, Wuhan 430072, Peoples R China

[2] Wuhan Univ, Dept Phys, Wuhan 430072, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 99卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.99.093904

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report a metamaterial which simultaneously possesses a negative bulk modulus and mass density. This metamaterial is a zinc blende structure consisting of one fcc array of bubble-contained-water spheres (BWSs) and another relatively shifted fcc array of rubber-coated-gold spheres (RGSs) in epoxy matrix. The negative bulk modulus and mass density are simultaneously derived from the coexistent monopolar resonances from the embedded BWSs and dipolar resonances from the embedded RGSs. The Poisson ratio of the metamaterial also turns negative near the resonance frequency.

引用

页数：4

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[11] Elastic wave scattering by periodic structures of spherical objects: Theory and experiment [J].