arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1105.0926cond-mat.softcond-mat.stat-mech
收藏

扩散控制的链闭合动力学:流体动力学相互作用下的柔性链

Dynamics of diffusion controlled chain closure: flexible chain in presence of hydrodynamic interaction

Rajarshi Chakrabarti

摘要:

基于Wilemski-Fixman方法(J.Chem.Phys.60,866(1974)),我们表明,对于θ溶剂中的柔性链,如果链不是很短,则用预平均近似处理的流体动力学相互作用使环闭合更快。我们还表明,在θ溶剂中,具有流体动力学相互作用的链的闭环时间与链长(N)成比例,为N^(1.527),与Freidman等人先前基于重整化群计算的预测(Phys. Rev. A. 40,5950(1989))。

英文摘要:

Based on the Wilemski-Fixman approach (J. Chem. Phys. 60, 866 (1974)) we showed that for a flexible chain in theta solvent hydrodynamic interaction treated with an pre-averaging approximation makes ring closing faster if the chain is not very short. Only for a very short chain the ring closing is slower with hydrodynamic interaction on. We have also shown that the ring closing time for a chain with hydrodynamic interaction in theta solvent scales with the chain length (N) as N^(1.527), in good agreement with previous renormalization group calculation based prediction by Freidman et al. (Phys. Rev. A. 40, 5950 (1989)).

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑