Abstract
The split of surface plasmon resonance of self-assembled gold nanoparticles on Si substrate is observed from the dielectric functions of the nanoparticles. The split plasmon resonances are modeled with two Lorentz oscillators: one oscillator at ∼1 eV models the polarization parallel to the substrate while the other at ∼2 eV represents the polarization perpendicular to the substrate. Both parallel and perpendicular resonances are red-shifted when the nanoparticle size increases. The red shifts in both resonances are explained by the image charge effect of the Si substrate.
| Original language | English |
|---|---|
| Pages (from-to) | 21926-21931 |
| Number of pages | 6 |
| Journal | Optics Express |
| Volume | 18 |
| Issue number | 21 |
| DOIs | |
| Publication status | Published - 11 Oct 2010 |
| Externally published | Yes |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics