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

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

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.

Original languageEnglish
Title of host publication23rd International Conference on Optical Fibre Sensors
PublisherSPIE
ISBN (Print)9781628411751
DOIs
Publication statusPublished - 2014
Event23rd International Conference on Optical Fibre Sensors - Santander, Spain
Duration: 2 Jun 20146 Jun 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9157
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference23rd International Conference on Optical Fibre Sensors
Country/TerritorySpain
CitySantander
Period2/06/146/06/14

Keywords

  • Label-free immunosensor
  • Microfiber coupler
  • Nanoparticles
  • Optical fiber sensor

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