Plasmonic Enhancement of Fluorescence and Raman Scattering by Metal Nanotips

  title={Plasmonic Enhancement of Fluorescence and Raman Scattering by Metal Nanotips},
  author={Nicholas Ian Cade and Ferhat Culfaz and Lior Eligal and Tom Ritman-Meer and Fumin Huang and Frederic Festy and David Richards},
We report modifications to the optical properties of fluorophores in the vicinity of noble metal nanotips. The fluorescence from small clusters of quantum dots has been imaged using an apertureless scanning near-field optical microscope. When a sharp gold tip is brought close to the sample surface, a strong distance-dependent enhancement of the quantum dot fluorescence is observed, leading to a simultaneous increase in optical resolution. These results are consistent with simulations of the… 

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