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Studying the thermoelectric effect in DNA is important for unravelling charge transport mechanisms and for developing relevant applications of DNA molecules. Here we report a study of the thermoelectric effect in single DNA molecules. By varying the molecular length and

Studying the thermoelectric effect in DNA is important for unravelling charge transport mechanisms and for developing relevant applications of DNA molecules. Here we report a study of the thermoelectric effect in single DNA molecules. By varying the molecular length and sequence, we tune the charge transport in DNA to either a hopping- or tunnelling-dominated regimes. The thermoelectric effect is small and insensitive to the molecular length in the hopping regime. In contrast, the thermoelectric effect is large and sensitive to the length in the tunnelling regime. These findings indicate that one may control the thermoelectric effect in DNA by varying its sequence and length. We describe the experimental results in terms of hopping and tunnelling charge transport models.

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    Title
    • Thermoelectric Effect and Its Dependence on Molecular Length and Sequence in Single DNA Molecules
    Contributors
    Date Created
    2016-04-15
    Resource Type
  • Text
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    Identifier
    • Digital object identifier: 10.1038/ncomms11294
    • Identifier Type
      International standard serial number
      Identifier Value
      2041-1723
    Note
    • The final version of this article, as published in Nature Communications, can be viewed online at: https://www.nature.com/articles/ncomms11294

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    Li, Y., Xiang, L., Palma, J. L., Asai, Y., & Tao, N. (2016). Thermoelectric effect and its dependence on molecular length and sequence in single DNA molecules. Nature Communications, 7, 11294. doi:10.1038/ncomms11294

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