Abstract
A refined discussion of the near-field scattering of spherical nanoparticles and the electromagnetic fields close to the particle surface is given. New results for the dependence on the distance from the surface and the angular distribution of the scattered light in the near-field are given. It will be shown that the radial component of the electric field leads to striking differences in the phase functions in the near-field and the far-field. Exemplary computations are presented for Ag and Au particles with different size. In a second part the discussion is extended to assemblies of spherical Ag and Au nanoparticles. It will be shown that large near-fields at wavelengths commonly used in SERS experiments are obtained for aggregates. In the near-field scattering intensity “hot spots” mark regions between particles in the aggregate where the near-field is particularly high.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
Author information
Authors and Affiliations
Additional information
Received: 4 May 2001 / Revised version: 20 July 2001 / Published online: 19 September 2001
Rights and permissions
About this article
Cite this article
Quinten, M. Local fields close to the surface of nanoparticles and aggregates of nanoparticles. Appl Phys B 73, 245–255 (2001). https://doi.org/10.1007/s003400100650
Published:
Issue Date:
DOI: https://doi.org/10.1007/s003400100650