Depolarized light scattering from colloidal gold nanoparticles

Krystyna Drozdowicz-Tomsia, Fang Xie, Nils Calander, Ignacy Gryczynski, Zygmunt Gryczynski, Ewa M. Goldys

Research output: Contribution to journalArticle

21 Scopus citations

Abstract

We present a study of depolarized light scattering from gold nanoparticles of various shapes and heterodispersity in aqueous solutions. The light scattering anisotropy for particles with average aspect ratio ∼1.2 and above 1.5 was measured experimentally and modelled theoretically. For elongated particles the anisotropy reaches the minimum value of about 0.5 in the spectral region 550-750 nm and its position corresponds to the maximum of the scattering component in the extinction spectra. Our work demonstrates the potential to distinguish plasmonic scattering from gold nanoparticles from the background Rayleigh scattering that is important for applications in sensing and imaging in turbid media.

Original languageEnglish
Pages (from-to)69-74
Number of pages6
JournalChemical Physics Letters
Volume468
Issue number1-3
DOIs
StatePublished - 13 Jan 2009

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