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Proceedings Paper

Development and sensitivity studies of a gold nanorod platform for a localized surface plasmon resonance based optical fibre biosensor
Author(s): J. Cao; E. Galbraith; T. Sun; K. T. V. Grattan
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Paper Abstract

A localized surface plasmon resonance (LSPR) based optical fibre sensor using gold nanorods has been demonstrated, showing a much higher sensitivity to the refractive index change surrounding the sensing area than that using gold nanoparticles. In this work, a novel method has been employed to improve gold nanorod synthesis and immobilization on the exposed surface area of an optical fibre core intended for sensor use. The device sensitivity, measured as a function of the refractive index change, was found to be around 778nm/RIU (RIU=Refractive Index Unit), showing considerable promise to be a better platform for label-free biosensors, monitoring the interaction between antibodies and their antigens in a number of sensing applications in industry.

Paper Details

Date Published: 17 May 2011
PDF: 4 pages
Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 775311 (17 May 2011); doi: 10.1117/12.885922
Show Author Affiliations
J. Cao, The City Univ. (United Kingdom)
Harbin Institute of Technology (China)
E. Galbraith, The City Univ. (United Kingdom)
T. Sun, The City Univ. (United Kingdom)
K. T. V. Grattan, The City Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 7753:
21st International Conference on Optical Fiber Sensors
Jacques Albert; Wojtek J. Bock, Editor(s)

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