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Tuning of plasmonic nanoparticle and surface enhanced wavelength shifting of a nanosystem sensing using 3-D-FDTD method

  • A. Bouali
    ,
  • Shyqyri Haxha
    ,
  • Fathi AbdelMalek
    ,
  • M. Dridi
    ,
  • Habib Bouchriha
  • University of Carthage
    ,
  • Université de Tunis El Manar
Research Output: Contribution to journal Article Peer-review

Open access

Abstract

In this paper, we have used in-house the 3-D finite-difference time-domain method to analyze a novel design of metallic nanoparticles based on a sensing nanosystem. The proposed structure is composed of two gold-nanocylinders of finite height with varying radii separated by a nanogap. We have demonstrated that tunable plasmonic nanoparticles can be controlled by varying the size of the interparticles separation distance. By engineering the nanogaps, it is shown that a strong enhancement of the electric field is achieved. Our simulations show a pronounced wavelength shift for small nanogaps. In addition, the influence of the refractive index of the surrounding medium is presented.

Publication Information

Output type

Research Output: Contribution to journal Article Peer-review

Original language

English

Pages from-to (Number of pages)

Pages 651-657

Journal (Volume, Issue Number)

IEEE Journal of Quantum Electronics (Volume 50, Issue 8)

Publication milestones

  • Published - 01/01/2014

Publication status

Published - 01/01/2014

ISSN

0018-9197

External Publication IDs

  • handle.net: 10547/333432
  • Scopus: 84904427475

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