@article{Puertas2003Simul-9121,
  year={2003},
  doi={10.1103/PhysRevE.67.031406},
  title={Simulation study of nonergodicity transitions : gelation in colloidal systems with short-range attractions},
  volume={67},
  journal={Physical Review E},
  author={Puertas, Antonio M. and Fuchs, Matthias and Cates, Michael E.},
  note={Article Number: 31406}
}

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    <dc:creator>Fuchs, Matthias</dc:creator>
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    <dc:contributor>Puertas, Antonio M.</dc:contributor>
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    <dcterms:abstract xml:lang="eng">Computer simulations were used to study the gel transition occurring in colloidal systems with short-range attractions. A colloid-polymer mixture was modeled and the results were compared with mode coupling theory (MCT) expectations and with the results for other systems (hard-spheres system and Lennard-Jones system). The self-intermediate scattering function and the mean squared displacement were used as the main dynamical quantities. Two different colloid packing fractions have been studied. For the lower packing fraction, a-scaling holds and the wave-vector analysis of the correlation function shows that gelation is a regular nonergodicity transition within MCT. The leading mechanism for the novel nonergodicity transition is identified as the bond formation caused by the short-range attraction. The time scale and diffusion coefficient also show qualitatively the expected behavior, although different exponents are found for the power-law divergences of these two quantities. The non-Gaussian parameter was also studied and a very large correction to Gaussian behavior was found. The system with higher colloid packing fraction shows indications of a nearby high-order singularity, causing a scaling to fail, but the general expectations for nonergodicity transitions still hold.</dcterms:abstract>
    <dc:creator>Puertas, Antonio M.</dc:creator>
    <dc:creator>Cates, Michael E.</dc:creator>
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    <dc:contributor>Cates, Michael E.</dc:contributor>
    <dc:contributor>Fuchs, Matthias</dc:contributor>
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    <dcterms:title>Simulation study of nonergodicity transitions : gelation in colloidal systems with short-range attractions</dcterms:title>
    <dcterms:bibliographicCitation>First publ. in: Physical Review E 67 (2001), Article 031406</dcterms:bibliographicCitation>
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