Abstract
AbstractStar polymer translocation into a spheroidal cavity has been studied using Langevin dynamics simulations. To isolate the effect of polymer architecture, the total number of monomers, N, is kept constant while the number of arms, f, is varied. For the special case of a spherical cavity, the mean translocation time, τ, exhibits nonmonotonic variation with f for large cavities, but decreases monotonically with f for sufficiently small cavities. The value of τ for a prolate cavity is generally similar to that for a spherical cavity of similar volume. In both cases, τ decreases monotonically with f for small cavities. In contrast, τ is significantly larger for an oblate cavity and exhibits nonmonotonic variation with f. If the attraction between the monomers and the cavity wall is sufficiently strong, the effect of cavity geometry largely vanishes and τ decreases monotonically with f, regardless of the cavity shape.
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