Table of Contents
ISRN Optics
Volume 2013, Article ID 946832, 7 pages
Research Article

Admittance Loci Based Design of a Plasmonic Structure Using Ag-Au Bimetallic Alloy Film

Department of Applied Optics and Photonics, University of Calcutta, 92 Acharya Prafulla Chandra Road, Kolkata 700 009, India

Received 3 October 2013; Accepted 14 November 2013

Academic Editors: A. K. Dharmadhikari, J. M. Girkin, B. D. Gupta, I. S. Moreno, and K. Panajotov

Copyright © 2013 Kaushik Brahmachari and Mina Ray. 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.


A theoretical study based on the use of admittance loci method in the design of surface plasmon resonance (SPR) based structure using Ag-Au bimetallic alloy film of different alloy fractions and nanoparticle sizes has been reported along with some interesting performance related simulated results at 633 nm wavelength. The sensitivity and other performance parameter issues of the structure based on the choice of correct alloy fraction and nanoparticle size of Ag-Au bimetallic alloy film have also been discussed giving due importance to the dynamic range of the designed structure.