Linear response of a grafted semiflexible polymer to a uniform force field

Details Linear response of a grafted semiflexible polymer to a uniform force field Linear response of a grafted semiflexible polymer to a uniform force field

2004-07-19

arxiv.org/abs/cond-mat/0407480v1

Physical Review E 70, 051806 (2004)

Physics

Condensed Matter

Soft Condensed Matter

6 pages, 3 figures

Scientific paper

10.1103/PhysRevE.70.051806

We use the worm-like chain model to analytically calculate the linear response of a grafted semiflexible polymer to a uniform force field. The result is a function of the bending stiffness, the temperature, the total contour length, and the orientation of the field with respect to that of the grafted end. We also study the linear response of a worm-like chain with a periodic alternating sequence of positive and negative charges. This can be considered as a model for a polyampholyte with intrinsic bending siffness and negligible intramolecular interactions. We show how the finite intrinsic persistence length affects the linear response to the external field.

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