4.6 Article

Molecular ruler based on concurrent measurements of enhanced Raman scattering and fluorescence

Journal

OPTICS LETTERS
Volume 35, Issue 22, Pages 3808-3810

Publisher

OPTICAL SOC AMER
DOI: 10.1364/OL.35.003808

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Funding

  1. National program Nanotechnology and Nanomaterials in Ukraine
  2. National Science Council and Academia Sinica in Taiwan

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We report a way to assess the separation between a molecule and a metal surface on account of both Raman scattering and fluorescence intensities measured simultaneously. This approach has no need for an accurate quantity of molecules and bears 1 nm resolution. Its distance sensitivity is experimentally demonstrated in the case of dye molecules lying on a gold surface with a polymer spacer layer in between and is compared with theoretical prediction. (C) 2010 Optical Society of America

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