【摘要】 对各向异性胶体基底表面的分枝状金原子凝聚体的生长机制进行了研究。沉积在无规杂质区域的熔融玻璃表面的金原子先形成网状结构的薄膜 ,然后逐渐演变成分枝状凝聚体。根据这一实验结果 ,建立了各向异性的团簇 团簇凝聚模型 ,对此类胶体基底表面的金原子分枝状凝聚体的生长全过程进行了计算机模拟 ,研究了杂质区域对凝聚体各种参数的影响 ,其结果与实验相符合更多还原

【Abstract】 The growth mechanism of ramified Au aggregates on anisotropic substrates is studied systematically.The Au atoms,deposited on a melting glass surface with randomly distributed impurities,form a web shaped film first,and then ramified Au aggregates appears gradually.Based on the experimental observations,we propose an Anisotropic Cluster Cluster Aggregation (ACCA) model and simulate the evolution of the Au aggregates with different parameters of the impurities.The simulation data are in good agreement with the experimental results.更多还原