Size and Shape Dependence of Localized Surface Plasmon Resonances
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.