Publikation:

Structure and tracer-diffusion in quasi–two-dimensional and strongly asymmetric magnetic colloidal mixtures

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Zahn_maret_Structure.pdf
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2002

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Kollmann, Markus
Hund, Roland
Rinn, Bernd
Nägele, Gerhard
Zahn, Klaus
Dhont, Jan K.G.

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Europhysics Letters (EPL). 2002, 58(6), pp. 919-925. ISSN 0295-5075. Available under: doi: 10.1209/epl/i2002-00458-0

Zusammenfassung

We study theoretically and experimentally static and diffusional properties of a strongly asymmetric binary mixture of super-paramagnetic colloids confined to an air-water interface. The colloids interact via repulsive dipolar forces, induced by a magnetic field applied perpendicular to the planar interface. Brownian dynamics (BD) computer simulations are employed to analyse the microstructure and the tracer-diffusion of both components. The profound interaction asymmetry leads to unusual features in the partial pair distribution functions, and to significantly enhanced tracer-diffusion. We find good agreement between our experimental data and the computer simulation results.

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530 Physik

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Soft matter, liquids and polymers, Computational physics, Statistical physics and nonlinear systems, Chemical physics and physical chemistry

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ISO 690KOLLMANN, Markus, Roland HUND, Bernd RINN, Gerhard NÄGELE, Klaus ZAHN, Hans KÖNIG, Georg MARET, Rudolf KLEIN, Jan K.G. DHONT, 2002. Structure and tracer-diffusion in quasi–two-dimensional and strongly asymmetric magnetic colloidal mixtures. In: Europhysics Letters (EPL). 2002, 58(6), pp. 919-925. ISSN 0295-5075. Available under: doi: 10.1209/epl/i2002-00458-0
BibTex
@article{Kollmann2002Struc-17336,
  year={2002},
  doi={10.1209/epl/i2002-00458-0},
  title={Structure and tracer-diffusion in quasi–two-dimensional and strongly asymmetric magnetic colloidal mixtures},
  number={6},
  volume={58},
  issn={0295-5075},
  journal={Europhysics Letters (EPL)},
  pages={919--925},
  author={Kollmann, Markus and Hund, Roland and Rinn, Bernd and Nägele, Gerhard and Zahn, Klaus and König, Hans and Maret, Georg and Klein, Rudolf and Dhont, Jan K.G.}
}
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