Screening of hydrodynamic interactions for polyelectrolytes in salt solution

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Smiatek, Jens
Schmid, Friederike
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Abstract
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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.
Comment: 4 pages, 4 figures, submitted to Physical Review Letters
Keywords
Condensed Matter - Soft Condensed Matter
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