Crossover from 2-dimensional to 3-dimensional aggregations of clusters on square lattice substrates

• 作者: 叶高翔 杨波 潘启发 祝宇红 程毅 陶向明
• 来源期刊: 中国物理B（英文版）
• 关键词: simulation cluster aggregation crossover
• 年，卷（期）: 2015,（11）
• 页码范围: 118105-1-118105-5
• 页数: 1页
• 语种: 英文
• DOI: 10.1088/1674-1056/24/11/118105

摘要

A Monte Carlo study on the crossover from 2-dimensional to 3-dimensional aggregations of clusters is presented. Based on the traditional cluster–cluster aggregation (CCA) simulation, a modified growth model is proposed. The clusters (including single particles and their aggregates) diffuse with diffusion step length l (1≤l≤7) and aggregate on a square lattice substrate. If the number of particles contained in a cluster is larger than a critical size sc, the particles at the edge of the cluster have a possibility to jump onto the upper layer, which results in the crossover from 2-dimensional to 3-dimensional aggregations. Our simulation results are in good agreement with the experimental findings.