Silver nanoparticles in nonlinear microscopy

D. J. Rativa, A. S L Gomes, Sebastian Wachsmann-Hogiu, D. L. Farkas, R. E. De Araujo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Nanotechnology has led to the manufacture of nanometer-sized objects which can be explored in multiphoton microscopy. In particular, metal nanoparticles (NPs) do not generate the multiphoton signal by itself, but rather it can enhance the nonlinear (NL) emission of fluorochromes, owing to the influence of local field effects. Energy transfer process is also observed in systems consisting of metal nanoparticles and organic dye molecules, leading to fluorescence quenching caused by an increased nonradiative rate and decrease in the dye's radiative rate. Here we have measured and analyzed the fluorescence of Tryptophan solution with and without silver nanoparticles, excited by one, two and three photon absorption. Due to the molecule interaction with the metallic NPs, fluorescence enhancement and quenching process were observed. We show that silver nanoparticles can be explored as a new tool in fluorescence microscopy.

Original languageEnglish (US)
Title of host publicationSBMO/IEEE MTT-S International Microwave and Optoelectronics Conference Proceedings
Pages478-482
Number of pages5
DOIs
StatePublished - 2007
Event2007 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference, IMOC - Salvador, Brazil
Duration: Jan 29 2007Nov 1 2007

Other

Other2007 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference, IMOC
CountryBrazil
CitySalvador
Period1/29/0711/1/07

Keywords

  • Fluorescence
  • Microscopy
  • Nanotechnology
  • Nonlinear optics

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Engineering(all)

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