【摘 要】
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We present a numerical study of Lett-handed metamaterials (LHMs) composed of double cross pairs at visible frequency. The S-parameter retrieval method is adopte
【机 构】
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Department of Applied Physics,Northwestern Polytechnical University,Xi’an 710129
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We present a numerical study of Lett-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 ceils, the cross LHMs have a higher frequency than fishnet LHMs, which is explained using a simple effective LC circuit model.
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