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Enhancement of sensitivity using gold nanorods-Antibody conjugator for detection of E. coli O157:H7

  • Nyeon Sik Eum
  • , Se Hyuk Yeom
  • , Dae Hyuk Kwon
  • , Hak Rin Kim
  • , Shin Won Kang

Research output: Contribution to journalReview articlepeer-review

67 Scopus citations

Abstract

In this study, GNRs (gold nanorods) were used to enhance the sensitivity of the biosensor for Escherichia coli O157:H7 in surface plasmon resonance (SPR) system. GNRs were designed and fabricated through seed-medicated growth and surface activation by alkanethiols for the attaching antibody. Antibodies for E. coli O157:H7 were immobilized on GNRs and measured by using UV-visible spectroscopy and sandwich assays were carried out to detect E. coli O157:H7 using Spreeta. This experiment is expected to play a key role in increasing sensitivity in other biosensor experiments and photothermal therapy.

Original languageEnglish
Pages (from-to)784-788
Number of pages5
JournalSensors and Actuators, B: Chemical
Volume143
Issue number2
DOIs
StatePublished - 7 Jan 2010

Keywords

  • E. coli O157:H7
  • Gold nanorod
  • Nano-SPR
  • Spreeta
  • Surface plasmon resonance

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