CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Numerical demonstration of three-dimensional terahertz metamaterials based on the causality principle |
Saeid Jamilan, Javad Nourinia, Mohammad Naghi Azarmanesh |
Department of Electrical Engineering, Urmia University, Urmia, Iran |
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Abstract A parameter retrieval algorithm based on the causality principle and Kramers–Kronig (KK) relations is employed to calculate the effective parameters of three-dimensional (3D) metamaterials. Using KK relations, the branch selecting problem, which is the challenge of effective parameter retrieval method, can be removed. To reveal the validity of the proposed algorithm, the constitutive refractive index of a homogeneous polymide cube is extracted. The result is in excellent agreement with the intrinsic refractive index of the polymide. Finally, the two terahertz metamaterials with 3D structures are designed and their effective parameters are then retrieved using the proposed algorithm. Numerical simulations are performed using the full-wave electromagnetic solver, CST Microwave Studio.
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Received: 08 July 2013
Revised: 16 August 2013
Accepted manuscript online:
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PACS:
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78.67.Pt
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(Multilayers; superlattices; photonic structures; metamaterials)
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78.20.Ci
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(Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))
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87.50.U-
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Corresponding Authors:
Saeid Jamilan
E-mail: saeid.jamilan@gmail.com
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About author: 78.67.Pt; 78.20.Ci; 87.50.U- |
Cite this article:
Saeid Jamilan, Javad Nourinia, Mohammad Naghi Azarmanesh Numerical demonstration of three-dimensional terahertz metamaterials based on the causality principle 2014 Chin. Phys. B 23 027804
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