Easier sieving through narrower pores: fluctuations and barrier crossing in flow-driven polymer translocation

Abstract

We show that the injection of polymer chains into nanochannels becomes easier as the channel becomes narrower. This counter intuitive result arises because of a decrease in the diffusive time scale of the chains with increasing confinement. The results are obtained by extending the de Gennes blob model of confined polymers, and confirmed by hybrid molecular dynamics - lattice-Boltzmann simulations.

arXiv comment5 pages, 3 figures

References in corpus (5)

• Simulation of a Single Polymer Chain in Solution by Combining Lattice Boltzmann and Molecular Dynamics
• Colloidal motility and pattern formation under rectified diffusiophoresis
• Flow-injection of branched polymers inside nanopores
• The chain sucker: translocation dynamics of a polymer chain into a long narrow channel driven by longitudinal flow
• DNA electrophoresis in designed channels

Cited by in corpus (2)

• Mesoscopic simulations at the physics-chemistry-biology interface
• Non-monotonous polymer translocation time across corrugated channels: comparison between Fick-Jacobs approximation and numerical simulations