First passage times and asymmetry of DNA translocation
First passage times and asymmetry of DNA translocation
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DOI：
10.1103/physreve.72.061918
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发表时间：
2005-12-01
影响因子：
2.4
通讯作者：
Grosberg, AY
中科院分区：
文献类型：
--
作者：
Lua, RC;Grosberg, AY
受单链DNA一端带有短发夹环的实验的启发，我们研究了一个粒子在不对称锯齿势下进行一维布朗运动以退出其中一个边界的第一次通过时间。我们考虑经典扩散情况下的第一次通过时间，其特征是类似于t的均方位移形式，以及异常扩散或次扩散情况下的第一次通过时间，其特征是类似于t（gamma）的形式，具有0
Motivated by experiments in which single-stranded DNA with a short hairpin loop at one end undergoes unforced diffusion through a narrow pore, we study the first passage times for a particle, executing one-dimensional Brownian motion in an asymmetric sawtooth potential, to exit one of the boundaries. We consider the first passage times for the case of classical diffusion, characterized by a mean-square displacement of the form similar to t, and for the case of anomalous diffusion or subdiffusion, characterized by a mean-square displacement of the form similar to t(gamma) with 0