DNA translocation through nanopores with salt gradients: The role of osmotic flow
Abstract
Recent experiments of translocation of double stranded DNA through nanopores [M. Wanunu et al. Nature Nanotech. 5, 160 (2010)] reveal that the DNA capture rate can be significantly influenced by a salt gradient across the pore. We show that osmotic flow combined with electrophoretic effects can quantitatively explain the experimental data on the salt-gradient dependence of the capture rate.
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