ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Three-dimensional surface current loops in broadband responsive negative refractive metamaterial with isotropy |
He Xun-Jun(贺训军)†, Wang Yue(王玥), Mei Jin-Shuo(梅金硕), Gui Tai-Long(桂太龙), and Yin Jing-Hua(殷景华) |
School of Applied Sciences, Harbin University of Science and Technology, Harbin 150080, China |
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Abstract We propose a bulk negative refractive index (NRI) metamaterial composed of periodic array of tightly coupled metallic cross-pairs printed on the six sides of a cube for applications of superlenses. The structural characteristics of the three-dimensional (3D) metamaterial consist in the high symmetry and the superposition of metallic cross-pairs, which can increase the magnetic inductive coupling between adjacent cross-pairs and realize a broadband and isotropic NRI. The proposed 3D structure is simulated using the CST Microwave Studio 2006 to verify the design validity. The simulation results show that the proposed structure can not only realize simultaneously an electric and magnetic response to an incident electromagnetic (EM) wave, but also exhibit a broadband NRI whose relative bandwidth can reach up to 56.7%. In addition, the NRI band is insensitive to the polarization and the incident angle of the incident EM wave. Therefore, the proposed metamaterial is a good candidate material as three-dimensional broadband isotropic NRI metamaterial.
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Received: 09 June 2011
Revised: 18 October 2011
Accepted manuscript online:
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PACS:
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41.20.Jb
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(Electromagnetic wave propagation; radiowave propagation)
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42.25.Bs
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(Wave propagation, transmission and absorption)
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73.20.Mf
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(Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))
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77.22.Ch
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(Permittivity (dielectric function))
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Fund: Project supported by the National Natural Science Foundation of China(Grant No.51005001),the National Science Foundation for Post-doctoral Scientists in China(Grant No.20090450226),the Research Foundation of Education Bureau of Heilongjiang Province,China(Grant No.11551098),and the Youth Foundation of Harbin University of Science and Technology,China(Grant No.2009YF024) |
Corresponding Authors:
He Xun-Jun, E-mail:hexunjun@yahoo.com.cn
E-mail: hexunjun@yahoo.com.cn
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Cite this article:
He Xun-Jun(贺训军), Wang Yue(王玥), Mei Jin-Shuo(梅金硕), Gui Tai-Long(桂太龙), and Yin Jing-Hua(殷景华) Three-dimensional surface current loops in broadband responsive negative refractive metamaterial with isotropy 2012 Chin. Phys. B 21 044101
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