Simulating stretching dynamics of DNA with dissipative particle dynamics

The stretching dynamics of a semiflexible chain by introducing time-independent tension is presented in this paper. Dissipative particle dynamics is used as the leading method to simulate the stretching behaviors of polymer by introducing the bead-rod or bead-spring type particles. The numerical results show us that in the low tension regime the flexibility can play an important role during the stretching process. It is also can be found that the larger tension leads to the increase of the fraction extension in the intermediate tension regime. And in the high tension regime, the fast equilibrium can be obtained.