Abstract
The injection of a polymer chain into a small circular cavity under tangential self-propelled force is studied by using Langevin dynam-ics simulation.Results indicate that the injection dynamics of the active polymer shows strong correlation with the polymer conformation inside the cavity depending on the polymer rigidity(kb).The injection time τ varies nonmonotonously with increasingkb,and reaches its minimum at kb.When kb is small(kb＜＜kb"),the polymer is nearly random coil in the cavity,and spends a long time at the final stage of the injection process due to the large repulsion between monomers inside the cavity.When kb is moderate(kb～kb*),the part of polymer inside the cavity forms spiral configuration under the tangential active force,and the whole polymer moves synchronously with a constant velocity during the injection pro-cess,leading to a small injection time.When kb is large(kb＞＞kb*),the polymer is nearly straight at the initial stage of the injection process,and takes a long time to bend itself,leading to a large injection time.
维普
万方数据