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Label-free oligonucleotide biosensor based on dual-peak long period fiber grating

  • Bangor University
  • Universidade de São Paulo

Research output: Chapter in Book/Published conference outputConference publication

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Abstract

We report the simplification and development of biofunctionalization methodology based on one-step 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide (EDC)-mediated reaction. The dual-peak long period grating (dLPG) has been demonstrated its inherent ultrahigh sensitivity to refractive index (RI), achieving 50-fold improvement in RI sensitivity over a standard LPG sensor used in low RI range. With the simple and efficient immobilization of unmodified oligonucleotides on sensor surface, dLPG-based biosensor has been used to monitor the hybridization of complementary oligonucleotides showing a detectable oligonucleotide concentration of 4 nM with the advantages of label-free, real-time, and ultrahigh sensitivity.

Original languageEnglish
Title of host publicationOptical Fibers and Sensors for Medical Diagnostics and Treatment Applications XVI
EditorsIsrael Gannot
Place of PublicationBellingham, WA (US)
PublisherSociety of Photo-Optical Instrumentation Engineers (SPIE)
Number of pages6
ISBN (Print)978-1-6284-1936-8
DOIs
Publication statusPublished - 7 Mar 2016
EventSPIE Photonics West BiOS 2016 - The Moscone Center, San Francisco, United States
Duration: 13 Feb 201618 Feb 2016

Publication series

NameSPIE Proceedings
PublisherSPIE
Volume9702
ISSN (Print)0277-786X
ISSN (Electronic)2410-9045

Conference

ConferenceSPIE Photonics West BiOS 2016
Country/TerritoryUnited States
CitySan Francisco
Period13/02/1618/02/16

Bibliographical note

Xianfeng Chen ; Chen Liu ; Marcos R. Cardoso ; Cleber R. Mendonça ; David A. Nagel ; Anna V. Hine and Lin Zhang; "Label-free oligonucleotide biosensor based on dual-peak long period fiber grating", Proc. SPIE 9702, Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XVI, 97020S (March 7, 2016).
Copyright 2016. Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
DOI: http://dx.doi.org/10.1117/12.2207869

Keywords

  • DNA
  • EDC-mediated reaction
  • label-free
  • long period grating
  • oligonucleotide
  • optical fiber biosensor

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