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. Author manuscript; available in PMC: 2011 Mar 9.
Published in final edited form as: Nature. 2010 Aug 18;467(7312):190–193. doi: 10.1038/nature09379

Figure 4. Average nanopore current blockades vs. blockade duration during DNA translocation.

Figure 4

DNA (16 μg/ml) was electrophoretically driven through a 5 nm diameter graphene pore by an applied voltage bias of 160 mV. The graphene membrane separated two fluid cells containing unbuffered 3M KCl solutions, pH 10.4. Insets show typical current-time traces for two translocation events sampled from among those pointed to by the arrows. The hyperbolic curve corresponds to freely translocating events at a fixed ecd12. Encircled events are delayed by graphene DNA interactions.