| Autor: |
Meakin, Paul, Chen, Zhong-Ying, Evesque, Pierre |
| Předmět: |
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| Zdroj: |
Journal of Chemical Physics; 7/1/1987, Vol. 87 Issue 1, p630, 6p |
| Abstrakt: |
The diffusion limited aggregation of particles with anisotropic sticking probabilities has been investigated using computer models. All of our simulations have been carried out using 2d square lattices with square ‘‘particles’’ having two more sticky and two less sticky sides with sides of different kinds adjacent to each other. In both the limits of fast and slow particle rotation the anisotropy of the particles enhances the anisotropy of the square lattice and cross-shaped clusters (with side branches) are formed which resemble those generated by very much larger scale simulations of the regular DLA process. In the slow rotation limit a bias in the number of particles launched with sticky sides facing in the X or Y directions on the lattice leads to the formation of needle-shaped clusters whose radius of gyration (Rg) increases with cluster mass (M) according to Rg ∼M2/3. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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