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Heterogeneous aggregation in binary colloidal alloys

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  • Wong, Andrew C.T
  • Yu, K.W

Abstract

Molecular dynamics (MD) simulation has been employed to study the nonequilibrium structure formation of two types of particles in a colloidal suspension, driven by type-dependent forces. We examined the time evolution of structure formation as well as on the structural properties of the resulting aggregation by studying the radial distribution function (RDF). The resulting aggregation is well described by a binary colloidal gelation. We compared the structural properties to those for one type of particles. From the MD results, it is evident that there are significant differences between the RDF's of the two cases. Moreover, we found that the average coordination number is generally larger in the monodisperse case for all area fractions considered. Thus, by means of heterogeneous aggregation, it is possible to obtain a wide variety of structures while more close-packed structures are formed for monodisperse colloidal aggregation.

Suggested Citation

  • Wong, Andrew C.T & Yu, K.W, 2002. "Heterogeneous aggregation in binary colloidal alloys," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 312(1), pages 50-58.
    • Handle: RePEc:eee:phsmap:v:312:y:2002:i:1:p:50-58
    DOI: 10.1016/S0378-4371(02)00836-1
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