Quantitative analysis of localized surface plasmons based on molecular probing

Claire Deeb (1) , Renaud Bachelot (1) , Jérôme Plain (1) , Anne-Laure Baudrion (1) , Safi Jradi (1) , Alexandre Bouhelier (2) , Olivier Soppera (3) , K. Jain Prashant (4) , Huang Libai (5) , Carole Ecoffet (3) , Lavinia Balan (3) , Pascal Royer (1)

1 LNIO - Laboratoire de Nanotechnologie et d'Instrumentation Optique
2 ICB - Laboratoire Interdisciplinaire Carnot de Bourgogne
3 IS2M - Institut de Science des Matériaux de Mulhouse
4 Miller Institute for Basic Research in Science
5 UND - University of Notre Dame [Indiana]

We report on the quantitative characterization of the plasmonic optical near-field of a single silver nanoparticle. Our approach relies on nanoscale molecular molding of the confined electromagnetic field by photoactivated molecules. We were able to directly image the dipolar profile of the near-field distribution with a resolution better than 10 nm and to quantify the near-field depth and its enhancement factor. A single nanoparticle spectral signature was also assessed. This quantitative characterization constitutes a prerequisite for developing nanophotonic applications.

Mots clés: near-field optics; localized surface plasmon; quantitative analysis; molecular probes; nanoscale photopolymerization

Domaines: Matériaux; Polymères; Optique / photonique

Claire Deeb, Renaud Bachelot, Jérôme Plain, Anne-Laure Baudrion, Safi Jradi, et al.. Quantitative analysis of localized surface plasmons based on molecular probing. ACS Nano, 2010, 4 (8), pp.4579-4586. ⟨10.1021/nn101017b⟩. ⟨hal-00536498⟩