2006•Unpublished venueRequires access

Electrochemical DNA Sensor Development for Diagnostic Application

Dóra Makai, András Györffy, Gábor Harsányi, Zsolt Tulassay

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Abstract

A miniaturised combined counter and reference electrode is introduced which can be used as a part of a scanning droplet cell for detecting DNA immobilisation on the surface of a gold working electrode by means of a potentiostat. The stability of the reference part of the combined electrode was investigated compared to a saturated calomel electrode. The reference electrode was found stable enough in the first 30 h. The combined electrode was tested in cyclic voltammetric measurements and found suitable for detecting DNA immobilisation on gold surface.

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What this paper is about

A miniaturised combined counter and reference electrode is introduced which can be used as a part of a scanning droplet cell for detecting DNA immobilisation on the surface of a gold working electrode by means of a potentiostat. The stability of the reference part of the combined electrode was investigated compared to a saturated calomel electrode. The reference electrode was found stable enough in the first 30 h. The combined electrode was tested in cyclic voltammetric measurements and found suitable for detecting DNA immobilisation on gold surface.

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Available abstract

A miniaturised combined counter and reference electrode is introduced which can be used as a part of a scanning droplet cell for detecting DNA immobilisation on the surface of a gold working electrode by means of a potentiostat. The stability of the reference part of the combined electrode was investigated compared to a saturated calomel electrode. The reference electrode was found stable enough in the first 30 h. The combined electrode was tested in cyclic voltammetric measurements and found suitable for detecting DNA immobilisation on gold surface.

Key concepts: Potentiostat, Electrode, Saturated calomel electrode, Reference electrode, Working electrode, Auxiliary electrode, Materials science, Electrochemistry

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