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Proceedings Paper

Determination of effective boundaries and material properties of SRR-rod and fishnet metamaterials
Author(s): Feng-Ju Hsieh; Wei-Chih Wang
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Paper Abstract

To retrieve effective refractive indices, impedances, and material properties, such as electric permittivity (ε) and magnetic permeability (μ) of MMs, we propose a full extraction method allowing determination of properties over all frequencies of interest including the strong resonant band, where the results are unavailable by the well-known robust method proposed by Kong. The proposed method based on the material continuity can retrieve missing results in the strong resonant band where the imaginary part of permittivity or permeability is negative. Two optimization models proposed to determine effective boundaries of split-ring-resonator (SRR)-based and fishnet MMs are defined based on the assumption of effective medium theory and characteristic of homogeneous media. The results are then compared with the traditional definition proposed by Kong. Finally, the refractive index, impedance, permittivity, and permeability of two slabs composed of SRR-based and fishnet MMs, respectively, are retrieved by the proposed method.

Paper Details

Date Published: 30 March 2012
PDF: 8 pages
Proc. SPIE 8344, Nanosensors, Biosensors, and Info-Tech Sensors and Systems 2012, 83441D (30 March 2012); doi: 10.1117/12.915355
Show Author Affiliations
Feng-Ju Hsieh, Univ. of Washington (United States)
Wei-Chih Wang, Univ. of Washington (United States)
National Cheng Kung Univ. (Taiwan)

Published in SPIE Proceedings Vol. 8344:
Nanosensors, Biosensors, and Info-Tech Sensors and Systems 2012
Vijay K. Varadan, Editor(s)

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