Interfacial velocity-dependent plasmon damping in colloidal metallic nanoparticles

R. Zadoyan, H.Y. Seferyan, A.W. Wark, R.M. Corn, V.A. Apkarian

Research output: Contribution to journalArticle

6 Citations (Scopus)

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 languageEnglish
Pages (from-to)10836-10840
Number of pages5
JournalJournal of Physical Chemistry C
Volume111
Issue number29
Early online date23 Jun 2007
DOIs
Publication statusPublished - 2007

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Keywords

  • plasmon damping
  • interfacial
  • velocity-dependent
  • colloidal metallic nanoparticles

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