The influence of nanometric surface morphology on surface plasmon resonances and surface enhanced effects on gold nanoparticles
Plasmonics is a booming field with numerous applications ranging from optical data processing over negative-refraction materials to bio-sensors. To achieve a better tuning and understanding of the plasmonic effect, an addressing of the surface roughness influence at localized surface plasmon resonances (LSPR) of nanostructures is attempted. For this means, electron beam lithography (EBL) fabricated and chemically synthesized nanoparticles will be systematically compared to obtain a complete picture of the nanoparticle´s surface roughness, crystallinity and non-local dielectric response contributions to their LSPR and surface enhanced effects (SEE). Further goals are to improve the SEE of EBL particles as well as to explore routes towards controlled crystallinity, geometry and arrangements optimization.