Correlating Structure, Geometry and Optical Properties of Plasmonic Nanoparticle Aggregates

Li-Lin Tay; John Hulse; Jeff Fraser

META 2021, META'12

Li-Lin Tay, John Hulse, Jeff Fraser

Last modified: 2011-12-15

Abstract

Small aggregates of plasmonic nanoparticle are known to sustain large surface enhanced Raman scattering (SERS) signals due to coupling of localized surface plasmon reosnances (LSPR) induced by the excitation radiation. Experimental measurements and theoretical calculations have both shown the intricate dependency of LSPR on individual nanoparticle structures. Very few studies have examined the correlation between SERS, LSPR and the structural geometry of small nanoparticle aggregates extensively. In this paper we will discuss results from our recent studies of the correlation between the geometry of small nanoparticle aggregates and their optical properties (SERS and LSPR).

Keywords

Plasmonics; DDA; SERS; LSPR; nanophotonics