Enhancement and quenching of single-molecule fluorescence.

@article{Anger2006EnhancementAQ,
  title={Enhancement and quenching of single-molecule fluorescence.},
  author={Pascal Anger and Palash Bharadwaj and Luk{\'a}s Novotn{\'y}},
  journal={Physical review letters},
  year={2006},
  volume={96 11},
  pages={
          113002
        }
}
We present an experimental and theoretical study of the fluorescence rate of a single molecule as a function of its distance to a laser-irradiated gold nanoparticle. The local field enhancement leads to an increased excitation rate whereas nonradiative energy transfer to the particle leads to a decrease of the quantum yield (quenching). Because of these competing effects, previous experiments showed either fluorescence enhancement or fluorescence quenching. By varying the distance between… 

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