Comparative Study
doi: 10.1021/nl050062t.
Observation of intrinsic size effects in the optical response of individual gold nanoparticles
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- PMID: 15755105
- DOI: 10.1021/nl050062t
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Comparative Study
Observation of intrinsic size effects in the optical response of individual gold nanoparticles
Nano Lett.
2005 Mar.
Abstract
The photothermal heterodyne imaging method is used to study for the first time the absorption spectra of individual gold nanoparticles with diameters down to 5 nm. Intrinsic size effects that result in a broadening of the surface plasmon resonance are unambiguously observed. Dispersions in the peak energies and homogeneous widths of the single-particle resonances are revealed. The experimental results are analyzed within the frame of Mie theory.
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