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Proceedings Paper

Schottky-contact plasmonic rectenna for biosensing
Author(s): Mohammad Alavirad; Saba Siadat Mousavi; Langis Roy; Pierre Berini
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Paper Abstract

We propose a plasmonic gold nanodipole array on silicon, forming a Schottky contact thereon, and covered by water. The behavior of this array under normal excitation has been extensively investigated. Trends have been found and confirmed by identification of the mode propagating in nanodipoles and its properties. This device can be used to detect infrared radiation below the bandgap energy of the substrate via internal photoelectric effect (IPE). Also we estimate its responsivity and detection limit. Finally, we assess the potential of the structure for bulk and surface (bio) chemical sensing. Based on modal results an analytical model has been proposed to estimate the sensitivity of the device. Results show a good agreement between numerical and analytical interpretations.

Paper Details

Date Published: 11 October 2013
PDF: 7 pages
Proc. SPIE 8915, Photonics North 2013, 89151D (11 October 2013); doi: 10.1117/12.2036203
Show Author Affiliations
Mohammad Alavirad, Carleton Univ. (Canada)
Univ. of Ottawa (Canada)
Saba Siadat Mousavi, Univ. of Ottawa (Canada)
Langis Roy, Carleton Univ. (Canada)
Pierre Berini, Univ. of Ottawa (Canada)

Published in SPIE Proceedings Vol. 8915:
Photonics North 2013
Pavel Cheben; Jens Schmid; Caroline Boudoux; Lawrence R. Chen; André Delâge; Siegfried Janz; Raman Kashyap; David J. Lockwood; Hans-Peter Loock; Zetian Mi, Editor(s)

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