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Optimization Design of Electromagnetic Nihility Nanoparticles

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【作者】 解亚明； 刘昌宇； 丁泽军； 王治国；

【Author】 Ya-Ming Xie;Chang-Yu Liu;Ze-Jun Ding;Zhi-Guo Wang;Department of Physics,University of Science and Technology of China;Beijing Computational Science Research Center;School of Physics Science and Engineering,Tongji University;Hefei National Laboratory for Physical Sciences at Microscale,University of Science and Technology of China;

【机构】 Department of Physics,University of Science and Technology of China； Beijing Computational Science Research Center； School of Physics Science and Engineering,Tongji University； Hefei National Laboratory for Physical Sciences at Microscale,University of Science and Technology of China；

【摘要】 Nihility material is a medium whose relative permittivity and permeability tend to zero simultaneously.In this work,comparing with the scattering properties of perfect nihility nanoparticles(made from nihility material),we provide an optimization design of electromagnetic nihility nanoparticles,which is a coated hybrid nanosphere constituted by commutative ε-negative(ENG) and μ-negative(MNG) media.Compared to a single ENG or MNG nanosphere,it is found that the total and back scattering spectra of coated hybrid nanospheres are much closer to those of perfect nihility nanospheres.Moreover,it is observed that the scattered electromagnetic field distribution of coated hybrid nanospheres is identical to that of perfect nihility nanospheres.These results indicate that the combination of commutative ENG and MNG media can constitute a composite structure which gives the closest approximation of electromagnetic scattering of perfect nihility nanospheres in a wide frequency range.

【Abstract】 Nihility material is a medium whose relative permittivity and permeability tend to zero simultaneously.In this work,comparing with the scattering properties of perfect nihility nanoparticles(made from nihility material),we provide an optimization design of electromagnetic nihility nanoparticles,which is a coated hybrid nanosphere constituted by commutative ε-negative(ENG) and μ-negative(MNG) media.Compared to a single ENG or MNG nanosphere,it is found that the total and back scattering spectra of coated hybrid nanospheres are much closer to those of perfect nihility nanospheres.Moreover,it is observed that the scattered electromagnetic field distribution of coated hybrid nanospheres is identical to that of perfect nihility nanospheres.These results indicate that the combination of commutative ENG and MNG media can constitute a composite structure which gives the closest approximation of electromagnetic scattering of perfect nihility nanospheres in a wide frequency range.

【关键词】 perfect； commutative； coated； permeability； scattered； closer； constitute； outer； permittivity； spherical；
【基金】 Supported by the National Natural Science Foundation of China under Grant Nos 11174222 and 91230203
  • 【文献出处】 Chinese Physics Letters ,中国物理快报(英文版) , 编辑部邮箱 ,2016年09期
  • 【分类号】TB383.1
  • 【下载频次】7
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