将Ａｕ沉积在ＰＶＦ有机膜基底上生成亚单层薄膜，发现了不同于金属／单晶组合的亚单层表面形貌，即某些表面区域形成特别大的团簇，而团簇周围有一近似圆形空带．推测这是由于表面局部区域扩散系数发生变化引起的，用改进后包括边缘扩散的ＤＤＡ模型证明了这一推测．模拟的结果还表明在ＰＶＦ膜基底上，Ａｕ团簇所包含的原子数Ｓ与团簇扩散系数ＤＳ应呈指数关系 Deposition of Au on a PVF organic film substrate to form a sub-monolayer film reveals a sub-monolayer surface morphology that is different from the metal / single crystal combination, ie, some surface regions form particularly large clusters while clusters have an approximate Round empty belt. It is speculated that this is due to the change of the local diffusion coefficient of the surface, which is proved by the improved DDA model including edge diffusion. The simulation results also show that on the PVF film substrate, the atomic number S of the Au cluster and the cluster diffusion coefficient DS should be exponential