Interfacial velocity-dependent plasmon damping in colloidal metallic nanoparticles

Zadoyan, R. and Seferyan, H.Y. and Wark, A.W. and Corn, R.M. and Apkarian, V.A. (2007) Interfacial velocity-dependent plasmon damping in colloidal metallic nanoparticles. Journal of Physical Chemistry C, 111 (29). pp. 10836-10840. ISSN 1932-7447

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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.

ORCID iDs

Zadoyan, R., Seferyan, H.Y., Wark, A.W. ORCID logoORCID: https://orcid.org/0000-0001-8736-7566, Corn, R.M. and Apkarian, V.A.;