Wideband omnidirectional infrared absorber with a patchwork of plasmonic nanoantennas.

@article{Bouchon2012WidebandOI,
  title={Wideband omnidirectional infrared absorber with a patchwork of plasmonic nanoantennas.},
  author={Patrick Bouchon and Charlie Koechlin and Fabrice Pardo and Riad Ha{\"i}dar and J Pelouard},
  journal={Optics letters},
  year={2012},
  volume={37 6},
  pages={1038-40}
}
In this Letter, we demonstrate experimentally that a patchwork of four metal-insulator-metal patches leads to an unpolarized wideband omnidirectional infrared absorption. Our structure absorbs 70% of the incident light on a 2.5 μm bandwidth at 8.5 μm. It paves the way to the design of wideband efficient plasmonic absorbers in the infrared spectrum. 
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