Microfiber coupler based biosensor incorporating a layer of gold nanoparticles with improved sensitivity

Yuliya Semenova; Lin Bo; Pengfei Wang; Furong Tian; Hugh Byrne; Gerald Farrell

doi:10.1117/12.2059662

2 June 2014 Microfiber coupler based biosensor incorporating a layer of gold nanoparticles with improved sensitivity

Yuliya Semenova, Lin Bo, Pengfei Wang, Furong Tian, Hugh Byrne, Gerald Farrell

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 91578T (2014) https://doi.org/10.1117/12.2059662
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

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.

Citation Download Citation

Yuliya Semenova, Lin Bo, Pengfei Wang, Furong Tian, Hugh Byrne, and Gerald Farrell "Microfiber coupler based biosensor incorporating a layer of gold nanoparticles with improved sensitivity", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91578T (2 June 2014); https://doi.org/10.1117/12.2059662

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