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Structure Factor Scaling in Fractal Aggregation of Colloidal Clusters

Published online by Cambridge University Press:  03 September 2012

Guillermo Ramírez-Santiago  and
Agustín E. González
Guillermo Ramírez-Santiago
Affiliation:
Instituto de Física, Universidad Nacional Autdóoma de México, Apdo Postal 20–364, México, 01000 D. F.
Agustín E. González
Affiliation:
Instituto de Física, Universidad Nacional Autdóoma de México, Apdo Postal 20–364, México, 01000 D. F.
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Abstract

We report the observation of spatial ordering of clusters that leads to a spinodal-type scaling of the structure factor S(q), in the 3D simulations of diffusion-limited colloid aggregation. We are able to clearly identify the peak in S(q) as arising from the correlation between particles belonging to nearest neighbor clusters. The S(q) has a terminal shape that corresponds to a close-packing of the clusters after gelation, in a concentration range larger than the one found in recent experiments.

PACS numbers: 02.70.-e, 05.40.+j, 64.60.Qb, 81.10.Dn

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 367: Symposium P – Fractal Aspects of Materials , 1994 , 447
Copyright
Copyright © Materials Research Society 1995

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References

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