Some properties of spherical and rod-shaped semiconductor and metal
nanocrystals*
Christy F. Landes, Stephan Link, Mona B. Mohamed, Babak Nikoobakht,
and Mostafa A. El-Sayed**
Laser Dynamics Laboratory, School of Chemistry and
Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332-0400,
USA
Abstract: In this paper, we summarize our results on the effect
of changing size and shape of semiconductor and metallic nanocrystals.
The change in size (from 3.5 to 1.1 nm) and shape (from spherical to
rod) of CdSe nanocrystals is found to affect both their optical and
nonradiative properties. In gold quasi-spherical nanocrystals, results
on the dependence of the electron-phonon relaxation of the surrounding
medium are presented. For gold nanorods, results and conclusions on
the mechanism of their self-assembly are presented. Enhanced Raman scattering
on their surfaces is studied and compared with that on spherical particle
surfaces.
* Special Topic Issue on the Theme
of Nanostructured Advanced Materials
**Corresponding author
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