ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Role of shape of hole in transmission and negative refractive index of sandwiched metamaterials |
Zhong Min (钟敏)a b, Ye Yong-Hong (叶永红)a |
a Department of Physics, Nanjing Normal University, Nanjing 210023, China; b Hezhou College, Hezhou 542899, China |
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Abstract Transmission and negative refractive index (NRI) of metal–dielectric–metal (MDM) sandwiched metamaterial perforated with four kinds of shapes of holes are numerically studied. Results indicate that positions of all transmission peaks of these kinds of holes are sensitive to the shape of the hole. Under the same conditions, the circular hole can obtain the maximum NRI and the rectangular hole can obtain the maximum frequency bandwidth of NRI. Moreover, the figure of merit (FOM) of the circular hole is the maximum too. As a result, we can obtain a higher NRI and FOM metamaterial by drilling circular hole arrays on MDM metamaterial.
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Received: 12 March 2013
Revised: 16 April 2013
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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78.20.Cj
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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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42.25.Bs
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(Wave propagation, transmission and absorption)
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Fund: Project supported partially by the National Natural Science Foundation of China (Grant No. 60778041) and the Natural Science Foundation of the Jiangsu Higher Education Institutions, China (Grant No. 07KJA51001). |
Corresponding Authors:
Ye Yong-Hong
E-mail: yeyonghong@njnu.edu.cn
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About author: 41.20.Jb; 78.20.Cj; 73.20.Mf; 42.25.Bs |
Cite this article:
Zhong Min (钟敏), Ye Yong-Hong (叶永红) Role of shape of hole in transmission and negative refractive index of sandwiched metamaterials 2014 Chin. Phys. B 23 024101
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