Open AccessFRACTAL Ag-AGGREGATES ON SILICONE OIL SURFACES
Author(s) -
Bo Yang,
MengBo Luo,
Tao Xiang-Ming,
Chunmu Feng,
Gaoxiang Ye
Publication year - 1999
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.48.1523
Subject(s) - fractal dimension , fractal , materials science , diffusion limited aggregation , silicone oil , rotation (mathematics) , diffusion , cluster (spacecraft) , aggregate (composite) , deposition (geology) , thermodynamics , physics , composite material , mathematics , geometry , mathematical analysis , paleontology , sediment , biology , computer science , programming language
The growth process of large fractal aggregates formed by diffusion and rotation of silver clusters on sillicone oil surfaces in investigated. Our results indicate that the silver clusters rotate randomly on the liquid substrates and the mean square angle displacement 2> and time difference Δt satisfy the generalized Einstein relation 2>=4DθΔt. The random rotation coefficient Dθ scales with the cluster size S as Dθ∝Sγθ, where γθ2.4±0.3. The dependence of the fractal dimension of the aggregates on the deposition rate and aggregate time is also presented.