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Phys Rev Lett. 2007 Sep 7;99(10):107401. Epub 2007 Sep 7.

Dielectric metamaterials based on electric and magnetic resonances of silicon carbide particles.

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Geballe Laboratory for Advanced Materials, 476 Lomita Mall, Stanford, California 94305, USA.


Silicon carbide particles exhibit both electric and magnetic optical resonances, allowing unexplored dielectric metamaterial designs. Experimental extinction spectra and Mie theory calculations of single microscale rod-shaped particles reveal three observable midinfrared resonant modes. Two of the modes are degenerate, with a frequency that can be tuned according to a resonance condition derived within the Letter. The existence of both electric and magnetic resonances may enable a novel negative refractive index metamaterial design.

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