chapter  3
38 Pages

Size and Shape Dependence of Localized Surface Plasmon Resonances

ByS. D’Agostino

In this chapter the influence of the structural parameters on the

optical behavior of silver nanoparticles is analyzed. The absorption

and scattering spectra are obtained for particles with different size

and shape in the framework of the discrete dipole approximation.

Radially symmetric nanoparticles, as well as finite-number faces

nanoparticles or multi-tips objects are investigated under the

excitation of uniform fields impacting with different polarizations

and propagation directions. The optical responses can be assigned

to the excitation of localized surface plasmon resonances of different

order. The presented results can be used to interpret experimental

measurements and/or to develop new high-performance substrates

for molecular plasmonics applications.