Stochastic sensing of polynucleotides using patterned nanopores

Details Stochastic sensing of polynucleotides using patterned nanopores Stochastic sensing of polynucleotides using patterned nanopores

2012-01-21

arxiv.org/abs/1201.4489v1

Physics

Condensed Matter

Soft Condensed Matter

10 pages, 12 figures

Scientific paper

The effect of the microscopic structure of a pore on polymer translocation is studied using Langevin dynamics simulation, and the consequence of introducing patterned stickiness inside the pore is investigated. It is found that the translocation process is extremely sensitive to the detailed structure of such patterns with faster than exponential dependence of translocation times on the stickiness of the pore. The stochastic nature of the translocation process leads to discernable differences between how polymers with different sequences go through specifically patterned pores. This notion is utilized to propose a stochastic sensing protocol for polynucleotides, and it is demonstrated that the method, which would be significantly faster than the existing methods, could be made arbitrarily robust.

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