Numerical Study of Low-Loss Cross Left-Handed Metamaterials at Visible Frequency |
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Authors: | ZHU Wei-Ren ZHAO Xiao-Peng |
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Affiliation: | Department of Applied Physics, Northwestern Polytechnical University, Xi'an 710129 |
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Abstract: | We present a numerical study of left-handed metamaterials (LHMs) composed of double cross pairs at visible frequency. The S-parameter retrieval method is adopted to confirm the negative refractive characteristic of this design. Compared with fishnet LHMs, the proposed cross LHMs have a much lower loss, which will greatly facilitate practical applications. It is also found that, with the same size of resonant cells, the cross LHMs have a higher frequency than fishnet LHMs, which is explained using a simple effective LC circuit model. |
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Keywords: | 42.25.Bs 78.20.-e |
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