二维泡沫稳定性与拓扑学性质的关系研究  

Relationship Between Stability and Topological Properties of Two-dimensional Foam

作　　者：韩国彬[1] 吴金添[1] 徐晓明[1] 

机构地区：[1]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

出　　处：《高等学校化学学报》2001年第7期1177-1180,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金 (批准号 :2 99730 33)

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 Von Neumann定律的时间指数的可能原因 .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.

关 键 词：二维泡沫 拓扑学性质 Von Neumann定律 分散体性 稳定性 气泡进化 

分 类 号：O648.24[理学—物理化学] O648.14[理学—化学]