Fractal geometry of colloidal aggregates
Journal Article
·
· Phys. Rev. Lett.; (United States)
Measurement of the fractal dimension, D, of colloidal aggregates of small silica particles is reported. We observe power-law decay of the structure factor (S(k)approx.k/sup -D/) by both light and x-ray scattering showing that the aggregates are fractal. D is found to be 2.12 +- 0.05, which is intermediate between recent numerical results for the kinetic models of diffusion-limited aggregation (D = 2.5) and cluster aggregation (D = 1.75), but is rather close to the value for lattice animals (D = 2.0), which are equilibrium structures.
- Research Organization:
- Sandia National Laboratories, Albuquerque, New Mexico 87185
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 6692879
- Journal Information:
- Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 52:26; ISSN PRLTA
- Country of Publication:
- United States
- Language:
- English
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