Investigation of excitation of plasmonic nano-particles by emitting molecules

• Applicant: Dr.-Ing. Thomas Wriedt
• Subject Area: Mechanical Process Engineering
• Term: from 2014 to 2016
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 266522012

• Final Report Year: 2016

Final Report Abstract

Within this project collaboration between the Bremen and the Moscow research groups was extended. Using a new model of the Discrete Sources Method we investigated the excitation by a singular source deposited in the gap between a metal nanoparticle and a noble metal filmed substrate. These results demonstrate that it is possible to influence amplitude and position in the frequency domain of the Average Enhancement Factor of fluorescence via variation of the geometrical parameters and materials of the considered structures. Based on the Generalization of the Optical Theorem to the case of singular source excitation it has been shown that the AEF can be estimated without computation time consuming absorption cross-section. Besides it has been demonstrated that the Purcell factor can be written in clear analytic form. As the newly developed extended version of the DSM seems to be quite versatile and we will continue to investigate problems related to Surface Enhanced Fluorescence.

Publications

• Analysis of scattered field enhancement in the evanescent wave area based on the Discrete Sources Method. J. Quantitative Spectroscopy and Radiative Transfer. 146 (2014) 235-243
  Eremin, Yuri & Wriedt, Thomas
  
• Fluorescent Enhancement in the Frame of Double Plasmon Resonance Investigation via the Discrete Sources Method. Electromagnetic & Light Scattering Conference, XV 2015, Leipzig, June 21-26, 2015
  Eremin Y.,Wriedt T.
  
• Fluorescent Enhancement in the Presence of Plasmonic Structures. in T. Wriedt (ed.), Light Scattering by Complex Particles, epubli, Berlin 2015. 32-35
  Eremin Yu A.
  
• The optical theorem for local source excitation of a particle near a plane interface. J. Quantitative Spectroscopy and Radiative Transfer. 166 (2015) 1-5
  Eremin, Yuri & Wriedt, Thomas
  
• Discrete Sources Method for light scattering analysis of nonaxisymmetric features of a substrate. Computer Physics Communications. 198 (2016) 12-21
  Eremin, Yuri & Wriedt, Thomas
  
• Generalization of the Optical Theorem to the multipole source excitation. J. Quantitative Spectroscopy and Radiative Transfer. 185 (2016) 22-26
  Eremin, Yuri & Wriedt, Thomas