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Colloidal aggregation induced by attractive interactions
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DOI：10.1063/1.1395558.png)
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Colloidal aggregation induced by attractive interactions is tackled experimentally and by Brownian dynamics simulations using a mixture of positive and negative particles. The structure of the aggregates and the aggregation kinetics are used to characterize the aggregation behavior. The clusters show uniform internal structures, with a fractal dimension lower than that of clusters formed in diffusion, indicating a more branched architecture. The aggregation kinetics also differs from the diffusive one, slowing down as time proceeds. Both results are totally confirmed by simulation. The transition from the attractive driven to the diffusion controlled regimes is studied varying the range of interaction. Continuous transitions are observed both for the aggregation kinetics and cluster structure. (C) 2001 American Institute of Physics.
Keyword:
BROWNIAN DYNAMICS SIMULATION
FRACTAL DIMENSION
LIGHT-SCATTERING
KINETICS
HETEROAGGREGATION
COAGULATION
BEHAVIOR
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3.1
论文数:
7.2W
被引数:
23.2W
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