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Open Physics

formerly Central European Journal of Physics

Editor-in-Chief: Seidel, Sally

Managing Editor: Lesna-Szreter, Paulina

IMPACT FACTOR 2018: 1.005

CiteScore 2018: 1.01

SCImago Journal Rank (SJR) 2018: 0.237
Source Normalized Impact per Paper (SNIP) 2018: 0.541

ICV 2017: 162.45

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Volume 6, Issue 3


Volume 13 (2015)

Scanning tunneling spectrosopy study of DNA conductivity

Irena Kratochvílová / Karel Král / Martin Bunček / Stanislav Nešpůorek / Tatiana Todorciuc / Martin Weiter / Jiři Navrátil / Bohdan Schneider / Jiři Pavluch
  • Faculty of Mathematics and Physics, Charles University in Prague, V Holešovièkách 2, 180 00, Prague, Czech Republic
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Published Online: 2008-07-17 | DOI: https://doi.org/10.2478/s11534-008-0072-7


We used STM to study the conductivity of 32 nucleotide long DNA molecules chemically attached to a gold surface. Two oligonucleotides containing all four base types namely G, A, C, T, one single stranded and one double helical, all showed conductance data significantly higher than DNA containing only T and A that were either single stranded d(T32) or double helical d(T32).d(A32) in confirmation. Within each sequence group, the conductivity of the double helical form was always higher than that of the single strand. We discuss the impact of structure, particular base stacking and affinity to the phase transition.

PACS: 87.14.gk; 81.07.-b; 81.07.Nb; 81.40.Rs

Keywords: molecular electronics; DNA; scanning tunneling microscopy; conductivity; charge carrier transport

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About the article

Published Online: 2008-07-17

Published in Print: 2008-09-01

Citation Information: Open Physics, Volume 6, Issue 3, Pages 422–426, ISSN (Online) 2391-5471, DOI: https://doi.org/10.2478/s11534-008-0072-7.

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© 2008 Versita Warsaw. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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