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Colloidal systems in three-dimensional microchannels : lattice control via channel width and external force

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2010

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Schwierz, Nadine

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http://nbn-resolving.de/urn:nbn:de:bsz:352-124482
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https://doi.org/10.1103/PhysRevE.82.031401
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Physical Review E. 2010, 82(3). ISSN 1539-3755. Available under: doi: 10.1103/PhysRevE.82.031401

Zusammenfassung

The structural behavior of hard spheres interacting with repulsive (screened Coulomb) interaction in narrow constrictions is investigated using Brownian dynamics simulations. The system of particles adapts to the confining potential and the interaction energies by a self-consistent arrangement of the particles. It results in the formation of planes throughout the three-dimensional channel. The presence of hard walls leads to structural deviations from the unbounded (infinite) crystal. The arrangement of the particles is perturbed by diffusion and an external driving force leading to a density gradient along the channel. The particles accommodate to the density gradient by reducing the number of planes if it is energetically favorable. This reduction in the number of planes is analogous to the reduction in the number of layers in two-dimensional systems. The influence of a self-organized order within the system is reflected in the velocity of the particles and their diffusive behavior.

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ISO 690SCHWIERZ, Nadine, Peter NIELABA, 2010. Colloidal systems in three-dimensional microchannels : lattice control via channel width and external force. In: Physical Review E. 2010, 82(3). ISSN 1539-3755. Available under: doi: 10.1103/PhysRevE.82.031401
BibTex
@article{Schwierz2010Collo-12448,
  year={2010},
  doi={10.1103/PhysRevE.82.031401},
  title={Colloidal systems in three-dimensional microchannels : lattice control via channel width and external force},
  number={3},
  volume={82},
  issn={1539-3755},
  journal={Physical Review E},
  author={Schwierz, Nadine and Nielaba, Peter}
}
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