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We propose to use double negative (DNG) metamaterial slabs to build effectivesuper-absorbers and perfect nanodetectors for single divergent sources. Wedemonstrate by numerical simulations that an absorbing nanoparticle properlyplaced inside a DNG slab back-covered with a perfect electric conductor orperfect magnetic conductor mirror can absorb up to 100% radiation energy of asingle dipole source placed outside the slab. Furthermore, we also show thateven the simple DNG slab without any absorbing nanoparticle could be used as aperfect absorber for both plane and divergent beams. The proposed systems mayfocus the radiation in nanoscale and thus have applications in opticalnanodevices for a variety of different purposes.

Metamaterial slab-based super-absorbers and perfect nanodetectors for single dipole sources