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Journal of Nanophotonics • Open Access

Resonance-based integrated plasmonic nanosensor for lab-on-chip applications
Author(s): Salah E. El-Zohary; Abdulilah A. Azzazi; Hiroyuki Okamoto; Toshihiro Okamoto; Masanobu Haraguchi; Mohamed A. Swillam

Paper Abstract

An integrated plasmonic resonator was proposed and analyzed. The detection performance of our device has been numerically verified by finite-difference time-domain simulations. The spectral sensitivity obtained was found to be 700  nm/RIU , where RIU is the refractive index unit. Our proposed sensor was found to have a detection limit in the order of 10 −6   RIU . The plasmonic sensor could be fabricated using focus ion beam milling. Our design leads to an ultra-compact sensor suitable for on-chip sensing applications associated with a high sensitivity. For biosensing, the proposed sensor could have the ability for a specific capture of biomolecules at the sensor surface that enables for quantification of the biomolecules.

Paper Details

Date Published: 20 November 2013
PDF: 10 pages
J. Nanophoton. 7(1) 073077 doi: 10.1117/1.JNP.7.073077
Published in: Journal of Nanophotonics Volume 7, Issue 1
Show Author Affiliations
Salah E. El-Zohary, Univ. of Tokushima (Japan)
Tanta Univ. (Egypt)
Abdulilah A. Azzazi, The American Univ. in Cairo (Egypt)
Hiroyuki Okamoto, Anan National College of Technology (Japan)
Toshihiro Okamoto, Univ. of Tokushima (Japan)
Masanobu Haraguchi, Univ. of Tokushima (Japan)
Mohamed A. Swillam, The American Univ. in Cairo (Egypt)

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