Long wavelength depolarized light scattering from silver nanoparticles

被引：13
作者：
Klitgaard, Soren
Shtoyko, Tanya
Calander, Nils
Gryczynski, Ignacy
Matveeva, Evgenia G.
Borejdo, Julian
Neves-Petersen, Maria Teresa
Petersen, Steffen B.
Gryczynski, Zygmunt
机构：
[1] Aalborg Univ, Dept Phys & Nanotechnol, DK-9220 Aalborg, Denmark
[2] Univ Texas, Dept Chem, Tyler, TX 75799 USA
[3] Chalmers Univ Technol, Dept Phys, S-41296 Gothenburg, Sweden
[4] Univ N Texas, Ctr Hlth Sci, Dept Cell Biol & Genet, Ft Worth, TX 76107 USA
[5] Univ N Texas, Ctr Hlth Sci, Dept Mol Biol & Immunol, Ft Worth, TX 76107 USA
来源：
CHEMICAL PHYSICS LETTERS | 2007年 / 443卷 / 1-3期
基金：
美国国家卫生研究院;
关键词：
D O I：
10.1016/j.cplett.2007.06.041
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We report the depolarized light scattering from heterodisperse silver nanoparticles. The profile of the wavelength dependent anisotropy of the colloidal solution of silver nanoparticles extends to the red and near-infrared (NIR) spectral region. For long wavelengths, above 600 nm, the anisotropy drops below 0.5. The presence of such a strong orthogonal component in the scattering opens new opportunities for imaging in dispersive media when polarizers can be used to suppress the background. The anisotropy profile of the scattering of heterodisperse silver nanoparticles can be satisfactorily explained by a theory based on interference between two surface plasmon resonances. (c) 2007 Elsevier B.V. All rights reserved.
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页码：1 / 5
页数：5
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