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Sensors 2011, 11(9), 9109-9120; doi:10.3390/s110909109

Impact of the Excitation Source and Plasmonic Material on Cylindrical Active Coated Nano-Particles

1,* , 1
1 Department of Electrical Engineering, Electromagnetic Systems, Technical University of Denmark, Ørsteds Plads, Bldg. 348, Kgs. Lyngby DK-2800, Denmark 2 Department of Photonics Engineering, Technical University of Denmark, Ørsteds Plads, Bldg. 343, Kgs. Lyngby DK-2800, Denmark 3 Department of Electrical and Computer Engineering, University of Arizona, 1230 E. Speedway Blvd. Tucson, AZ 85721, USA
* Author to whom correspondence should be addressed.
Received: 23 July 2011 / Revised: 23 August 2011 / Accepted: 20 September 2011 / Published: 21 September 2011
(This article belongs to the Special Issue Metamaterials for Sensing)
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Electromagnetic properties of cylindrical active coated nano-particles comprised of a silica nano-cylinder core layered with a plasmonic concentric nano-shell are investigated for potential nano-sensor applications. Particular attention is devoted to the near-field properties of these particles, as well as to their far-field radiation characteristics, in the presence of an electric or a magnetic line source. A constant frequency canonical gain model is used to account for the gain introduced in the dielectric part of the nano-particle, whereas three different plasmonic materials (silver, gold, and copper) are employed and compared for the nano-shell layers.
Keywords: core-shell nano-particles; plasmonics; sensors core-shell nano-particles; plasmonics; sensors
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Arslanagic, S.; Liu, Y.; Malureanu, R.; Ziolkowski, R.W. Impact of the Excitation Source and Plasmonic Material on Cylindrical Active Coated Nano-Particles. Sensors 2011, 11, 9109-9120.

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