Tunable negative permeability in an isotropic dielectric composite

被引：78

作者：

Zhao, Qian ^{[2
]}

Du, Bo ^{[1
]}

Kang, Lei ^{[1
]}

Zhao, Hongjie ^{[1
]}

Xie, Qin ^{[1
]}

Li, Bo ^{[1
]}

Zhang, Xing ^{[1
]}

Zhou, Ji ^{[1
]}

Li, Longtu ^{[1
]}

Meng, Yonggang ^{[2
]}

机构：

[1] Tsinghua Univ, Dept Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China

[2] Tsinghua Univ, Dept Precis Instruments & Mechanol, State Key Lab Tribol, Beijing 100084, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 05期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

D O I：

10.1063/1.2841811

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A tunable isotropic negative effective permeability is experimentally demonstrated in a three-dimensional (3D) dielectric composite consisting of dielectric ceramic cube arrays by temperature changing. It shows that a strong subwavelength magnetic resonance can be excited in dielectric cubes corresponding to the first Mie resonance mode and can be continuously and reversibly adjusted from 13.65 to 19.28 GHz with the temperature changing from -15 to 35 degrees C. Accordingly, negative permeability can be performed in the frequency range of about 6 GHz by adjusting the temperature. It provides a convenient route to design adaptive metamaterials and 3D invisible cloak. (C) 2008 American Institute of Physics.

引用

页数：3

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