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Nonequilibrium structure of primary particles in colloidal bidispersion

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Abstract

The nonequilibrium aggregation structure of primary particles in colloidal bidispersions is investigated at high volume fractions by Brownian dynamics simulations. It is found that introducing limited different sized particles in the monodispersion can obviously affect the short-range structures of primary particles. In a bidispersion, fractal dimension of aggregates, only consisting of primary particles, increases with increasing the size difference in the long-range scale. The structure factor S(q) of aggregates, obtained from the particle correlation function g(r), suggests that fractal structure disappears when the primary particles become not “primary” in volume fraction.

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Acknowledgements

We would like to thank Dr. Yusunori KANETA, Prof. Ying Chen and Prof. Masao DOI for enlightening discussions.

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Authors and Affiliations

  1. Department of Human and Engineered Environmental Studies, Graduate School of Frontier Science, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8563, Japan

    Junjun Jia & Shuichi Iwata

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  1. Junjun Jia
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  2. Shuichi Iwata
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Correspondence to Junjun Jia.

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Jia, J., Iwata, S. Nonequilibrium structure of primary particles in colloidal bidispersion. Colloid Polym Sci 288, 1485–1493 (2010). https://doi.org/10.1007/s00396-010-2274-y

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  • DOI: https://doi.org/10.1007/s00396-010-2274-y

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