| 二维泡沫稳定性与拓扑学性质的关系研究 |
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| 引用本文： | 韩国彬,吴金添,徐晓明. 二维泡沫稳定性与拓扑学性质的关系研究[J]. 高等学校化学学报, 2001, 22(7): 1177-1180 |
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| 作者姓名： | 韩国彬 吴金添 徐晓明 |
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| 作者单位： | 厦门大学化学系物理化学研究所, 固体表面物理化学国家重点实验室, 厦门 361005 |
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| 基金项目： | 国家自然科学基金 (批准号 :2 99730 33) |
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| 摘 要： | 研究了二维泡沫形成、进化及其拓扑学性质随时间的变化关系以及影响其稳定性的因素.探索了二维泡沫初始有序化的气泡进化和完全无序化的气泡进化的两种过程,并分析在无序化气泡的进化过程中,平均气泡面积随时间的变化呈现出α=1.5的幂指数关系,以及该指数大于VonNeumann定律的时间指数的可能原因.讨论了气泡的边数分布及其二阶矩.
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| 关 键 词： | 二维泡沫 拓扑学性质 VonNeumann定律 |
| 文章编号： | 0251-0790(2001)07-1177-04 |
| 收稿时间： | 2000-06-14 |
| 修稿时间： | 2000-06-14 |
Relationship Between Stability and Topological Properties of Two-dimensional Foam |
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| HAN Guo Bin ,WU Jin Tian,XU Xiao Ming. Relationship Between Stability and Topological Properties of Two-dimensional Foam[J]. Chemical Research In Chinese Universities, 2001, 22(7): 1177-1180 |
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| Authors: | HAN Guo Bin WU Jin Tian XU Xiao Ming |
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| Affiliation: | Department of Chemistry, Institute of Physical Chemistry, State Key Laboratory for Physical Chemistry of Solid Surface, Xiamen University, Xiamen 361005, China |
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| Abstract: | An experimental study of the evolution of two dimensional foam is presented. The topological properties of two dimensional foam as a function of the evolution time were investigated, and the relationship between the topological properties and stability of two dimensional foam was discussed. In the evolution of two dimensional foam, two distinct states were observed: a transient state characterized by the presence of ordered state and a long term fully disordered state. The long term behavior of the foam shows that the average bubble area increases as a power law with exponent a =1.5, which is deviated from Von Neumann law and the possible reasons discussed. In addition, the distribution of sides of bubbles and the second moment of the distribution of number of sides are also discussed. |
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| Keywords: | Two dimensional foam Topological property Von Neumann law |
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