@article{Gutsche2008Collo-59926,
  year={2008},
  doi={10.1063/1.2965127},
  title={Colloids dragged through a polymer solution : experiment, theory and simulation},
  number={8},
  volume={129},
  issn={0021-9606},
  journal={The Journal of Chemical Physics},
  author={Gutsche, Christof and Kremer, Friedrich and Krüger, Matthias and Rauscher, Markus and Weeber, Rudolf and Harting, Jens},
  note={Article Number: 084902}
}

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    <dc:creator>Kremer, Friedrich</dc:creator>
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    <dcterms:title>Colloids dragged through a polymer solution : experiment, theory and simulation</dcterms:title>
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    <dc:creator>Weeber, Rudolf</dc:creator>
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    <dcterms:abstract xml:lang="eng">We present microrheological measurements of the drag force on colloids pulled through a solution of 𝜆 -DNA (used here as a monodisperse model polymer) with an optical tweezer. The experiments show a drag force that is larger than expected from the Stokes formula and the independently measured viscosity of the DNA solution. We attribute this to the accumulation of DNA in front of the colloid and the reduced DNA density behind the colloid. This hypothesis is corroborated by a simple drift-diffusion model for the DNA molecules, which reproduces the experimental data surprisingly well, as well as by corresponding Brownian dynamics simulations.</dcterms:abstract>
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    <dc:contributor>Weeber, Rudolf</dc:contributor>
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