Screening of hydrodynamic interactions for polyelectrolytes in salt solution

Details Screening of hydrodynamic interactions for polyelectrolytes in salt solution Screening of hydrodynamic interactions for polyelectrolytes in salt solution

2008-09-30

arxiv.org/abs/0809.5239v1

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 4 figures, submitted to Physical Review Letters

Scientific paper

We provide numerical evidence that hydrodynamic interactions are screened for charged polymers in salt solution on time scales below the Zimm time. At very short times, a crossover to hydrodynamic behavior is observed. Our conclusions are drawn from extensive coarse-grained computer simulations of polyelectrolytes in explicit solvent and explicit salt, and discussed in terms of analytical arguments based on the Debye-Hueckel approximation.

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