Publikation:

Influence of hydrodynamic interactions on the dynamics of long-range interacting colloidal particles

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1999

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Rinn, Bernd
Zahn, Klaus
Maass, Philipp

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Europhysics Letters (EPL). 1999, 46(4), pp. 537-541. ISSN 0295-5075. Available under: doi: 10.1209/epl/i1999-00297-5

Zusammenfassung

We study the influence of hydrodynamic interactions on the self-diffusion of super-paramagnetic colloidal particles suspended in water. The colloids interact via repulsive dipolar forces due to an applied magnetic field, and their motion is effectively confined to two dimensions. By comparing experimental data with the results from extensive computer simulations, where the water flow fields are treated at the Rotne-Prager level, we show that the diffusivity is enhanced at all times due to hydrodynamic interactions. The enhancement effect becomes stronger with increasing particle density, but is almost unaffected by the temperature.

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Fachgebiet (DDC)
530 Physik

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Colloids, Fluctuation phenomena, random processes, noise and Brownian motion., Laminar suspensions

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ISO 690RINN, Bernd, Klaus ZAHN, Philipp MAASS, Georg MARET, 1999. Influence of hydrodynamic interactions on the dynamics of long-range interacting colloidal particles. In: Europhysics Letters (EPL). 1999, 46(4), pp. 537-541. ISSN 0295-5075. Available under: doi: 10.1209/epl/i1999-00297-5
BibTex
@article{Rinn1999Influ-17401,
  year={1999},
  doi={10.1209/epl/i1999-00297-5},
  title={Influence of hydrodynamic interactions on the dynamics of long-range interacting colloidal particles},
  number={4},
  volume={46},
  issn={0295-5075},
  journal={Europhysics Letters (EPL)},
  pages={537--541},
  author={Rinn, Bernd and Zahn, Klaus and Maass, Philipp and Maret, Georg}
}
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