Long wavelength depolarized light scattering from silver nanoparticles
Journal article, 2007
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.
PARTICLES
ARRAYS
SUBMICROSCOPIC
TRACER LABELS
SENSITIVITY
SENSORS
SURFACE-PLASMON RESONANCE
HIGHLY FLUORESCENT ANALOGS
BIOLOGICAL APPLICATIONS
METAL NANOPARTICLES
Author
S. Klitgaard
Aalborg University
T. Shtoyko
University of Texas
Nils Calander
Chalmers, Applied Physics
I. Gryczynski
University of North Texas
E. G. Matveeva
University of North Texas
J. Borejdo
University of North Texas
M. T. Neves-Petersen
Aalborg University
S. B. Petersen
Aalborg University
Z. Gryczynski
University of North Texas
Chemical Physics Letters
0009-2614 (ISSN)
Vol. 443 1-3 1-5Subject Categories
Other Engineering and Technologies
DOI
10.1016/j.cplett.2007.06.041