中国物理B ›› 2000, Vol. 9 ›› Issue (6): 414-418.doi: 10.1088/1009-1963/9/6/003
罗孟波, 叶高翔, 陶向明, 许健民, 焦正宽
Luo Meng-bo (罗孟波), Ye Gao-xiang (叶高翔), Tao Xiang-ming (陶向明), Xu Jian-min (许健民), Jiao Zheng-kuan (焦正宽)
摘要: The growth mechanism of fractal islands on a two-dimensional nonlattice substrate with periodic boundary conditions has been investigated by using Monte Carlo technique. Results show that the fractal dimension df of the final ramified islands is almost independent of the diffusion step length, mobility and rigid rotation of the islands. The characteristics of the size distribution of the discs in an island do not change the dimension df of the island. However, we find that df increases linearly with the surface coverage ρ of the system and its slope decreases with the increase of the mean diameter of the discs.
中图分类号: (Structural modeling: serial-addition models, computer simulation)