Physics of negative refractive index materials

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Classical theory for second-harmonic generation from metallic nanoparticles. Phys Rev B 79:235109 (2008, background): “Among them the Ushaped NPs (split-ring resonators) are known to possess negative effective permeabilities in certain frequency regions and are generally referred to as magnetic metamaterials [34, 59, 60, 61, 62].”
On the cloaking effects associated with anomalous localized resonance (2006, background): “For a polarizable line source with 3cs3m and d0!d (corresponding to the asymmetric lens studied by Ramakrishna et al. (2002)) the field is resonant in the layer of thickness 2d0 centered at the front interface (i.”
On electromagnetic characterization and homogenization of nanostructured metamaterials (2010, background): “, overview papers [1, 9] and books [2–4, 10–12]).”