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Proceedings Paper

Microfiber coupler based biosensor incorporating a layer of gold nanoparticles with improved sensitivity
Author(s): Yuliya Semenova; Lin Bo; Pengfei Wang; Furong Tian; Hugh Byrne; Gerald Farrell
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Paper Abstract

We studied the effect of a star-shaped gold nanoparticles layer coated on the surface of the microfiber coupler (MFC) on the sensitivity of the embedded MFC biosensor. It is shown that deposition of the layer of star-shaped gold nanoparticles on the MFC sensor surface results in a significantly increased spectral shift (on average 3.05 nm shift compared to a 1.08 nm shift per layer of electrolyte for the sample without the nanoparticles layer). In addition, introducing the nanoparticle layer results in the decrease of the transmission power; measurement of the changes in transmission also could be used as a means for the sensor interrogation.

Paper Details

Date Published: 2 June 2014
PDF: 4 pages
Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91578T (2 June 2014); doi: 10.1117/12.2059662
Show Author Affiliations
Yuliya Semenova, Dublin Institute of Technology (Ireland)
Lin Bo, Dublin Institute of Technology (Ireland)
Pengfei Wang, Dublin Institute of Technology (Ireland)
Furong Tian, Dublin Institute of Technology (Ireland)
Hugh Byrne, Dublin Institute of Technology (Ireland)
Gerald Farrell, Dublin Institute of Technology (Ireland)

Published in SPIE Proceedings Vol. 9157:
23rd International Conference on Optical Fibre Sensors
José M. López-Higuera; Julian D. C. Jones; Manuel López-Amo; José Luis Santos, Editor(s)

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