Table of Contents
Journal of Nanoparticles
Volume 2014 (2014), Article ID 408350, 8 pages
http://dx.doi.org/10.1155/2014/408350
Research Article

Spectropolarimetric Properties of a Gallium Nanoparticle Layer on a Sapphire Substrate

1Department of Physics, University of Alabama in Huntsville, 301 Sparkman Drive, Huntsville, AL 35899, USA
2Earth System Science Center, University of Alabama in Huntsville, 320 Sparkman Drive, Huntsville, AL 35805, USA

Received 29 May 2014; Revised 19 September 2014; Accepted 22 September 2014; Published 2 November 2014

Academic Editor: Gunjan Agarwal

Copyright © 2014 Prashant Raman et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Gallium nanoparticles (Ga NPs) are currently the subject of vigorous research as possible substrates in surface-enhanced Raman scattering (SERS) experiments in the ultraviolet spectral domain. Verification of any comprehensive model of the interaction of electromagnetic radiation with Ga NPs requires that complete polarimetric measurements be made. These spectropolarimetric properties can be obtained using a Mueller matrix spectropolarimeter (MMSP). The position of localized surface plasmon resonances (LSPRs) and spectral depolarization data of Ga NPs in the 300 to 1100 nm spectral region are presented. Spectral depolarization data may be of value in creating a better understanding of how light couples to individual nanoparticles, as well as the role played by interparticle coupling and the connection to phenomena such as SERS.