The boundary-element method is applied to the interaction of light with resonant metallic nanoparticles. At a certain wavelength, excitation of a surface plasmon takes place, which leads to a resonantly enhanced near-field amplitude and a large scattering cross section. The resonance wavelength for different scatterer geometries is determined. Alteration of the scattering properties in the presence of other metallic nanoparticles is discussed. To treat this problem, a novel formulation of the boundary-element method is presented that solves the interaction problem for all the coupled particles.
© 2003 Optical Society of America
Original Manuscript: January 14, 2003
Revised Manuscript: May 9, 2003
Manuscript Accepted: May 9, 2003
Published: October 1, 2003
Carsten Rockstuhl, Martin Guy Salt, and Hans Peter Herzig, "Application of the boundary-element method to the interaction of light with single and coupled metallic nanoparticles," J. Opt. Soc. Am. A 20, 1969-1973 (2003)