A Model of Anomalous Chain Translocation Dynamics


Autoria(s): Chaudhury, Srabanti; Cherayil, Binny J
Data(s)

18/12/2008

Resumo

A model of polymer translocation based on the stochastic dynamics of the number of monomers on one side of a pore-containing surface is formulated in terms of a one-dimensional generalized Langevin equation, in which the random force is assumed to be characterized by long-ranged temporal correlations. The model is introduced to rationalize anomalies in measured and simulated values of the average time of passage through the pore, which in general cannot be satisfactorily accounted for by simple Brownian diffusion mechanisms. Calculations are presented of the mean first passage time for barrier crossing and of the mean square displacement of a monomeric segment, in the limits of strong and weak diffusive bias. The calculations produce estimates of the exponents in various scaling relations that are in satisfactory agreement with available data.

Formato

application/pdf

Identificador

http://eprints.iisc.ernet.in/25873/1/jp7108362.pdf

Chaudhury, Srabanti and Cherayil, Binny J (2008) A Model of Anomalous Chain Translocation Dynamics. In: Journal of Physical Chemistry B, 112 (50). pp. 15973-15979.

Publicador

American Chemical Society

Relação

http://pubs.acs.org/doi/abs/10.1021/jp7108362

http://eprints.iisc.ernet.in/25873/

Palavras-Chave #Inorganic & Physical Chemistry
Tipo

Journal Article

PeerReviewed