中国物理B ›› 2012, Vol. 21 ›› Issue (11): 117802-117802.doi: 10.1088/1674-1056/21/11/117802

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

New assembly route for three-dimensional metamaterials obtained through effective medium theory

臧元章, 何明霞, 谷建强, 田震, 韩家广   

  1. Center for Terahertz Waves and College of Precision Instrument and Optoelectronics Engineering, Tianjin University, and Key Laboratory of Optoelectronics Information Technology, Tianjin 300072, China
  • 收稿日期:2012-04-25 修回日期:2012-05-24 出版日期:2012-10-01 发布日期:2012-10-01
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61107053, 61138001, and 61007034) and the Tianjin Natural Science Foundation, China (Grant No. 11JCYBJC25900).

New assembly route for three-dimensional metamaterials obtained through effective medium theory

Zang Yuan-Zhang (臧元章), He Ming-Xia (何明霞), Gu Jian-Qiang (谷建强), Tian Zhen (田震), Han Jia-Guang (韩家广 )   

  1. Center for Terahertz Waves and College of Precision Instrument and Optoelectronics Engineering, Tianjin University, and Key Laboratory of Optoelectronics Information Technology, Tianjin 300072, China
  • Received:2012-04-25 Revised:2012-05-24 Online:2012-10-01 Published:2012-10-01
  • Contact: Han Jia-Guang E-mail:jiaghan@tju.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61107053, 61138001, and 61007034) and the Tianjin Natural Science Foundation, China (Grant No. 11JCYBJC25900).

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摘要： In this study, we illustrate the effective medium theories in the designs of three-dimensional composite metamaterials of both negative permittivity and negative permeability. The proposed metamaterial consists of random coated spheres with sizes smaller compared to the wavelength embedded in a dielectric host. Simple design rules and formulas following the effective medium models are numerically and analytically presented. We demonstrate that the revised Maxwell-Garnett effective medium theory enables us to design three-dimensional composite metamaterials through the assembly of the coated spheres which are random and much smaller than the wavelength of the light. The proposed approach allows for the precise control of the permittivity and the permeability and guides a facile, flexible, and versatile way for the fabrication of composite metamaterials.

关键词: metamaterials, effective medium theory

Abstract: In this study, we illustrate the effective medium theories in the designs of three-dimensional composite metamaterials of both negative permittivity and negative permeability. The proposed metamaterial consists of random coated spheres with sizes smaller compared to the wavelength embedded in a dielectric host. Simple design rules and formulas following the effective medium models are numerically and analytically presented. We demonstrate that the revised Maxwell-Garnett effective medium theory enables us to design three-dimensional composite metamaterials through the assembly of the coated spheres which are random and much smaller than the wavelength of the light. The proposed approach allows for the precise control of the permittivity and the permeability and guides a facile, flexible, and versatile way for the fabrication of composite metamaterials.

Key words: metamaterials, effective medium theory

中图分类号:  (Multilayers; superlattices; photonic structures; metamaterials)

  • 78.67.Pt
78.20.Ci (Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))