Heat transfer resistance as a tool to quantify hybridization efficiency of DNA on a nanocrystalline diamond surface

P. Cornelis, T. Vandenryt, G. Wackers, E. Kellens, P. Losada-Perez, R. Thoelen, W. De Ceuninck, K. Eersels*, S. Drijkoningen, K. Haenen, M. Peeters, B. van Grinsven, P. Wagner

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

5 Citations (Web of Science)

Abstract

In this article, we report on a label-free real-time method based on heat transfer resistivity for thermal monitoring of DNA denaturation and its potential to quantify DNA fragments with a specific sequence of interest. Probe DNA, consisting of a 36-mer fragment was covalently immobilized on a nanocrystalline diamond surface, created by chemical vapor deposition on a silicon substrate. Various concentrations of full matched 29-mer target DNA fragments were hybridized with this probe DNA. We observed that the change in heat transfer resistance upon denaturation depends on the concentration of target DNA used during the hybridization, which allowed us to determine the dose-response curve. Therefore, these results illustrate the potential of this technique to quantify the concentration of a specific DNA fragment and to quantify the hybridization efficiency to its probe. (C) 2014 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)32-36
Number of pages5
JournalDiamond and Related Materials
Volume48
DOIs
Publication statusPublished - Sep 2014

Keywords

  • CVD diamond
  • Heat transfer resistance
  • DNA quantification
  • Hybridization efficiency analysis
  • SINGLE-NUCLEOTIDE POLYMORPHISMS
  • FIELD-EFFECT SENSORS
  • CHARGED MACROMOLECULES
  • THIN-FILMS
  • SPECTROSCOPY
  • ATTACHMENT
  • MICROSCOPY
  • MUTATIONS

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