Graphene quantum point contact transistor for DNA sensing.

@article{Girdhar2013GrapheneQP,
  title={Graphene quantum point contact transistor for DNA sensing.},
  author={Anuj Girdhar and Chaitanya Sathe and Klaus Schulten and Jean-Pierre Leburton},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  year={2013},
  volume={110 42},
  pages={16748-53}
}
By using the nonequilibrium Green's function technique, we show that the shape of the edge, the carrier concentration, and the position and size of a nanopore in graphene nanoribbons can strongly affect its electronic conductance as well as its sensitivity to external charges. This technique, combined with a self-consistent Poisson-Boltzmann formalism to account for ion charge screening in solution, is able to detect the rotational and positional conformation of a DNA strand inside the nanopore… CONTINUE READING
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