Abstract
Modulation of the surface plasmon resonance of colloidal silver nanoparticles driven by particle shape oscillations is interrogated via transient-scattering measurements using white light as the probe. The two-dimensional (λ, t) image of the spectrally resolved scattering shows π/2 phase shift between the modulation of center Ω(t) and width Γ(t) of the resonance − while Ω is modulated by the strain amplitude, the plasmon-damping rate Γ is modulated by the strain rate. We ascribe the effect to scattering from the electrophoretic potential generated by the motion of the interfacial double layer of the colloidal particles.
| Original language | English |
|---|---|
| Pages (from-to) | 10836-10840 |
| Number of pages | 5 |
| Journal | Journal of Physical Chemistry C |
| Volume | 111 |
| Issue number | 29 |
| Early online date | 23 Jun 2007 |
| DOIs | |
| Publication status | Published - 2007 |
Keywords
- plasmon damping
- interfacial
- velocity-dependent
- colloidal metallic nanoparticles