Lanthanide upconversion nanocrystals within microstructured optical fibres

a sensitive platform for biosensing and a new tool for nanocrystal characterisation

E. P. Schartner*, D. Jin, H. Ebendorff-Heidepriem, J. A. Piper, T. M. Monro

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

2 Citations (Scopus)
6 Downloads (Pure)

Abstract

We investigate a powerful new sensing platform based on upconversion luminescence in NaYF4: Yb/Er nanocrystals loaded inside a suspended-core microstructured optical fibre. The use of a NIR source enables autofluorescence from the glass to be reduced compared to using visible sources for excitation of fluorescence. We demonstrate a substantial improvement in the detection limit that can be achieved in a suspended-core fibre sensor, with detection limits as low as 660 fM achieved. This is a factor of 15× better than the best results previously reported using Quantum dots in a similar fibre.

Original languageEnglish
Title of host publicationThird Asia Pacific Optical Sensors Conference
EditorsJohn Canning, Gang-Ding Peng
Place of PublicationBellingham, WA
PublisherSPIE
Pages1-4
Number of pages4
Volume8351
ISBN (Print)9780819490278
DOIs
Publication statusPublished - 2012
Event3rd Asia Pacific Optical Sensors Conference - Sydney, NSW, Australia
Duration: 31 Jan 20123 Feb 2012

Other

Other3rd Asia Pacific Optical Sensors Conference
CountryAustralia
CitySydney, NSW
Period31/01/123/02/12

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