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Journal of Nanomaterials
Volume 2013 (2013), Article ID 247045, 8 pages
http://dx.doi.org/10.1155/2013/247045
Research Article

Dependence of Plasmonic Properties of Silver Island Films on Nanoparticle Size and Substrate Coverage

1Thin Film Laboratory, Department of Physics, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
2Hind High Vacuum Company Private Limited, No. 17, Phase 1, Peenya Industrial Area, Bangalore 560058, India

Received 10 May 2013; Revised 6 August 2013; Accepted 7 August 2013

Academic Editor: Chunyi Zhi

Copyright © 2013 M. G. Sreenivasan 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

Localized surface plasmon resonance displayed by metal nanoparticles has been studied in silver island films prepared by the simple technique of vacuum evaporation, which is one of the options that is easily adaptable for large area and low cost applications. Silver island films with varying island sizes and areal coverages are prepared by depositing silver films with varying thicknesses followed by annealing. The optical properties of the samples have been explained in terms of dependence of scattering and absorption on the metal island size, interparticle interaction and matrix effects, and the wavelength range over which the plasmonic effects are present.