*Department of Physics, Wuhan Iron and Steel University, Wuhan 430081
**Institute of Physics, Academia Sinica, Beijing 100080
***Department of Physics, Wuhan University, Wuhan 430072 and
International Centre for Materials Physics, Academia Sinica, Shenyang 110015
Diffusion-Limited Aggregation of Dimers
CAO Qunsheng*;PENG Gongwen**;TIAN Decheng***
*Department of Physics, Wuhan Iron and Steel University, Wuhan 430081
**Institute of Physics, Academia Sinica, Beijing 100080
***Department of Physics, Wuhan University, Wuhan 430072 and
International Centre for Materials Physics, Academia Sinica, Shenyang 110015
Abstract： We have simulated the diffusion-limited growth of dimers on a two-dimensional triangluar lattice and have found that if tips of the dirners have different polarities, the resulting clusters, due to the alignment of the dimers and polarities chosen, are Jess dense than the clusters generated without polarities. These results make our model an effective way to demonstrate the role of the sticking probabilities in the diffusion-limited aggregation.
1992, Vol. 9 
