| 郭向云,钟炳,彭少逸.表面扩散的Monte Carlo初探[J].分子催化,1996,(1): |
| 表面扩散的Monte Carlo初探 |
| Monte Carlo Simulations of Surface Diffusion |
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| DOI： |
| 中文关键词: Monte Carlo，模拟，表面扩散，覆盖度，分形 |
| 英文关键词:Monte carlo simulation,Surface diffusion,Coverage,Fractal, |
| 基金项目: |
| 郭向云 钟炳 彭少逸 |
| 中国科学院山西煤炭化学研究所 |
| 摘要点击次数: 763 |
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| 中文摘要: |
| 利用ＭｏｎｔｅＣａｒｌｏ方法模拟了理想表面和分形表面上的扩散过程；通过模拟可以发现，表面扩散系数不仅与表面浓度有关，而且还与扩散的时间、表面的几何形貌等有关。在表面覆盖度比较高时，表面扩散系数有一极大值。与理想表面相比，分形表面会使扩散系数减小。 |
| 英文摘要: |
| The Monte Carlo method based on random walk was used to simulate surface diffusion processes on an ideal surface and a DLA fractal.By the simulations,it is found that the surface diffusivity is related not only to the surface coverage but also to the observation time and the surface geometry.There is a maximum of the surface diffusivity in high surface coverage.The fractal surface can reduce the surface diffusivity in comparison with the ideal surface. |
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