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Article dans une revue

Ionic current inversion in pressure-driven polymer translocation through nanopores

Abstract : We predict streaming current inversion with multivalent counterions in hydrodynamically driven polymer translocation events from a correlation-corrected charge transport theory including charge fluctuations around mean-field electrostatics. In the presence of multivalent counterions, electrostatic many-body effects result in the reversal of the DNA charge. The attraction of anions to the charge-inverted DNA molecule reverses the sign of the ionic current through the pore. Our theory allows for a comprehensive understanding of the complex features of the resulting streaming currents. The underlying mechanism is an efficient way to detect DNA charge reversal in pressure-driven translocation experiments with multivalent cations.
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Soumis le : mercredi 21 avril 2021 - 09:21:11
Dernière modification le : mardi 19 octobre 2021 - 11:33:30

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Sahin Buyukdagli, Ralf Blossey, T. Ala-Nissila. Ionic current inversion in pressure-driven polymer translocation through nanopores. Physical Review Letters, American Physical Society, 2015, Physical Review Letters, 114 (8), pp.088303. ⟨10.1103/PhysRevLett.114.088303⟩. ⟨hal-03203791⟩



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