摘要
使用表征粒子簇结构的几何形状因子 ,通过对扩散控制聚集过程的模拟 ,从微观或介观层次研究了粒子簇结构对粒子簇增长速率和速率常数的影响规律 ,并与实验结果进行了对比分析 .
The aggregation rate constant embodies the microscopic details of the collision process among clusters and the kinetic behavior directly depend on the size and configuration of the reacting clusters. Using Monte Carlo method for different geometric morphologies the diffusion limited aggregation mechanism in three dimensions was randomly simulated. The effect of cluster Brownian diffusion coefficient on the aggregation rate constant for dimers formation, the aggregation rate of the system and the mean cluster size was studied on microscopic and mesoscopic levels.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2000年第6期922-925,共4页
Chemical Journal of Chinese Universities
基金
国家自然科学基金! (批准号 :2 95 73 10 9)
关键词
布朗扩散系数
聚集动力学
MONTECARLO
胶体粒子
Cluster Brownian diffusion coefficient
Diffusion limited aggregation
Aggregation kinetics
Geometric morphology factor
Monte Carlo method
