Plasmonic light-harvesting devices over the whole visible spectrum.

  title={Plasmonic light-harvesting devices over the whole visible spectrum.},
  author={Alexandre Aubry and Dang Yuan Lei and Antonio I. Fernandez-Dominguez and Yannick Sonnefraud and Stefan A. Maier and John B. Pendry},
  journal={Nano letters},
  volume={10 7},
On the basis of conformal transformation, a general strategy is proposed to design plasmonic nanostructures capable of an efficient harvesting of light over a broadband spectrum. The surface plasmon modes propagate toward the singularity of these structures where the group velocity vanishes and energy accumulates. A considerable field enhancement and confinement is thus expected. Radiation losses are also investigated when the structure dimension becomes comparable to the wavelength. 
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