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- Title
Optical extinction spectroscopy of single silver nanoparticles.
- Authors
Billaud, P.; Huntzinger, J.-R.; Cottancin, E.; Lermé, J.; Pellarin, M.; Arnaud, L.; Broyer, M.; Del Fatti, N.; Vallée, F.
- Abstract
The extinction spectrum of single silver nanoparticles with size ranging from 20 to 80 nm is investigated with the spatial modulation spectroscopy technique using either a tunable laser or a white lamp as the broadband source. Results are in good agreement with the prediction of the Mie theory, permitting to extract the nanoparticle size from the measured absolute value of the optical extinction cross-section. In contrast, the deduced refractive index of the nanoparticle environment and the reduction of the electron mean free path show a large dependence on the precise value of the bulk silver dielectric function.
- Subjects
NANOPARTICLES; PARTICLES; SILVER; PARTICLES (Nuclear physics); OPTICS
- Publication
European Physical Journal D (EPJ D), 2007, Vol 43, Issue 1-3, p271
- ISSN
1434-6060
- Publication type
Article
- DOI
10.1140/epjd/e2007-00112-y