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Benchmark investigation of diamondoid-functionalized electrodes for nanopore DNA sequencing
Univ Stuttgart, Inst Computat Phys, Stuttgart, Germany..
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Materialteori. Univ Fed Fluminense, Dept Fis, ICEx, Volta Redonda, RJ, Brazil..ORCID-id: 0000-0001-9611-8772
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Materialteori.
Univ Stuttgart, Inst Computat Phys, Stuttgart, Germany..
2016 (engelsk)Inngår i: Nanotechnology, ISSN 0957-4484, E-ISSN 1361-6528, Vol. 27, nr 41, artikkel-id 414002Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Small diamond-like particles, diamondoids, have been shown to effectively functionalize gold electrodes in order to sense DNA units passing between the nanopore-embedded electrodes. In this work, we present a comparative study of Au(111) electrodes functionalized with different derivatives of lower diamondoids. Focus is put on the electronic and transport properties of such electrodes for different DNA nucleotides placed within the electrode gap. The functionalization promotes a specific binding to DNA leading to different properties for the system, which provides a tool set to systematically improve the signal-to-noise ratio of the electronic measurements across the electrodes. Using quantum transport calculations, we compare the effectiveness of the different functionalized electrodes in distinguishing the four DNA nucleotides. Our results point to the most effective diamondoid functionalization of gold electrodes in view of biosensing applications.

sted, utgiver, år, opplag, sider
2016. Vol. 27, nr 41, artikkel-id 414002
Emneord [en]
DNA sequencing, quantum transport, density functional theory, diamondoids, nanopore, nanogap
HSV kategori
Identifikatorer
URN: urn:nbn:se:uu:diva-317710DOI: 10.1088/0957-4484/27/41/414002ISI: 000394367200001PubMedID: 27607107OAI: oai:DiVA.org:uu-317710DiVA, id: diva2:1082591
Forskningsfinansiär
German Research Foundation (DFG), SFB 716Carl Tryggers foundation Swedish Research CouncilTilgjengelig fra: 2017-03-17 Laget: 2017-03-17 Sist oppdatert: 2017-11-29bibliografisk kontrollert

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