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7 May 2008 Theoretical and experimental analysis of plasmonic resonances in infrared metamaterials under normal to plane incidence
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Abstract
Metamaterials have attracted much interest since their realization by Smith et al. [2]. A few research teams all other the world are making them a reality in the infrared and optical regime. Following the theoretical study of C. Rockstuhl et al. [4], we have fabricated various metamaterial structures derived from the combination of SRR (Split Ring Resonators) and nano-continuous wires by diminishing the size of the legs of the SRR perpendicular to the gap. This geometrical transformation shown in the SEM (scanning electron microscope) pictures of figure 1 allows an experimental understanding of the origin of resonances in metamaterials under normal incidence. The fabrication was performed by e-beam lithography, gold on silicon. Simulations were performed using a Drude model of the electromagnetic permittivity of gold. Both measurement and simulation results lead to an accurate analyze of the plasmonic resonances of the metamaterial and open the way to their control in infrared metamaterials under normal to plane propagation.
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Boubacar Kanté, André de Lustrac, and Frédérique Gadot "Theoretical and experimental analysis of plasmonic resonances in infrared metamaterials under normal to plane incidence", Proc. SPIE 6987, Metamaterials III, 698724 (7 May 2008); https://doi.org/10.1117/12.783820
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