Near-field and far-field extinction and scattering efficiencies for UV−vis-irradiated spherical gold nanoparticles of varying size have been estimated as a function of the radiation wavelength. Several different dielectric function models are used to explore the role of quantum-size effects. The results suggest that the utilization of bulk dielectric data does not capture quantitatively important size effects and may correspond to an unjustified oversimplification.
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Bruzzone et al. (2004) studied this question.
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