Resonance-based integrated plasmonic nanosensor for lab-on-chip applications

Salah E. El-Zohary; Abdulilah A. Azzazi; Hiroyuki Okamoto; Toshihiro Okamoto; Masanobu Haraguchi; Mohamed A. Swillam

doi:10.1117/1.JNP.7.073077

20 November 2013 Resonance-based integrated plasmonic nanosensor for lab-on-chip applications

Salah E. El-Zohary, Abdulilah A. Azzazi, Hiroyuki Okamoto, Toshihiro Okamoto, Masanobu Haraguchi, Mohamed A. Swillam

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Journal of Nanophotonics, Vol. 7, Issue 1, 073077 (November 2013). https://doi.org/10.1117/1.JNP.7.073077

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.

CC BY: © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Salah E. El-Zohary, Abdulilah A. Azzazi, Hiroyuki Okamoto, Toshihiro Okamoto, Masanobu Haraguchi, and Mohamed A. Swillam "Resonance-based integrated plasmonic nanosensor for lab-on-chip applications," Journal of Nanophotonics 7(1), 073077 (20 November 2013). https://doi.org/10.1117/1.JNP.7.073077

Published: 20 November 2013

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