Repton model of gel electrophoresis in the long chain limit

Details Repton model of gel electrophoresis in the long chain limit Repton model of gel electrophoresis in the long chain limit

1997-02-14

arxiv.org/abs/cond-mat/9702142v1

Physics

Condensed Matter

Soft Condensed Matter

14 pages,4 figures

Scientific paper

Reptation governs motion of long polymers through a confining environment. Slack enters at the ends and diffuses along the polymer as stored length. The rate at which stored length diffuses limits the speed at which the chain can drift. This paper relates the rate of stored length diffusion to the conformation of the tube within which the polymer is confined. In the scaling limit of long polymer chains and weak applied electric fields, holding the product of polymer length times field finite, the tube length and stored length density take on their zero-field values. The drift velocity then depends only on the the polymer's end-to-end separation in the direction of the field.

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