Influence of the shape of a gold nanoparticle on the localized-surface plasmon resonance and the surface-enhanced Raman scattering intensity

Anne-Sophie Grimault (1) , Alexandre Vial (1) , Marc Lamy de La Chapelle (1)

1 LNIO - Laboratoire de Nanotechnologie et d'Instrumentation Optique

We study localized-surface plasmon resonance (LSPR) and the surface-enhanced Raman scattering (SERS) gain of gold cylindrical and ellipsoidal nanorods of different diameter or major axis. The LSPR and SERS gains are calculated with the three dimensional Finite-Difference Time-Domain method using Drude-Lorentz dispersion model. We find that the maxima of the extinction spectrum and the average SERS gain of each investigated nanostructures are shifted whatever their size and their shape.

Domains: Engineering Sciences [physics]; Optics / Photonic

Anne-Sophie Grimault, Alexandre Vial, Marc Lamy de La Chapelle. Influence of the shape of a gold nanoparticle on the localized-surface plasmon resonance and the surface-enhanced Raman scattering intensity. Optics & Photonics 2005, 2005, San Diego, France. pp.59270G, ⟨10.1117/12.614796⟩. ⟨hal-02860897⟩