title: Metamaterial slab-based super-absorbers and perfect nanodetectors for single dipole sources.
abstract: We propose to use double negative (DNG) metamaterial slabs to build effective super-absorbers and perfect nanodetectors for single divergent sources. We demonstrate by numerical simulations that an absorbing nanoparticle properly placed inside a DNG slab back-covered with a perfect electric conductor or perfect magnetic conductor mirror can absorb up to 100% radiation energy of a single dipole source placed outside the slab. Furthermore, we also show that even the simple DNG slab without any absorbing nanoparticle could be used as a perfect absorber for both plane and divergent beams. The proposed systems may focus the radiation in nanoscale and thus have applications in optical nanodevices for a variety of different purposes.
authors.affiliation: Department of Physics, National Taiwan University, Taipei 10617, Taiwan. gyguo@phys.ntu.edu.tw
authors.forename: Guang-Yu
authors.initials: GY
authors.lastname: Guo
authors.forename: Vasily
authors.initials: V
authors.lastname: Klimov
authors.forename: Shulin
authors.initials: S
authors.lastname: Sun
authors.forename: Wei-Jin
authors.initials: WJ
authors.lastname: Zheng
mesh_terms: D000042:Absorption; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007909:Lenses; D053758:Nanoparticles / Q000737:chemistry* / Q000528:radiation effects / Q000648:ultrastructure; D036103:Nanotechnology / Q000295:instrumentation*; D010316:Particle Size; D010783:Photometry / Q000295:instrumentation*; D012031:Refractometry / Q000295:instrumentation*; D014159:Transducers