Experimental study of the bursting of inviscid bubbles
Experimental study of the bursting of inviscid bubbles
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DOI：
10.1103/physreve.75.065302
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发表时间：
2007-06-01
影响因子：
2.4
通讯作者：
Stannarius, Ralf
中科院分区：
文献类型：
--
作者：
Mueller, Frank;Kornek, Ulrike;Stannarius, Ralf
用微秒级照相技术研究了毛细管中近晶相气泡的破裂动力学，并对收缩膜的性质进行了定量分析。薄膜材料收集在一个遵循球体形状的移动边缘中。恒定的边缘速度立即达到;它是成比例的膜厚度的平方根的倒数，并在合理的定量协议与模型预测。薄膜和厚膜的边缘构成不同。在薄（亚微米）膜中，边缘起伏并分解成单个液滴，而对于厚膜，它保持紧凑和直，并形成边缘。在破裂过程中，初始膜厚度增加全局，尽管近晶层结构。然后，薄膜边缘的凹陷伴随着微米范围内气泡表面的波动。
The rupture dynamics of smectic bubbles supported on a capillary is studied by means of microsecond photography, and properties of the retracting films are quantitatively analyzed. The film material collects in a moving rim that follows the sphere shape. A constant edge velocity is reached instantly; it is proportional to the inverse square root of the film thickness and in reasonable quantitative agreement with model predictions. The rim constitution for thin and thick films differs. In thin (submicrometer) films, the rim undulates and decomposes into single droplets, while for thick films, it remains compact and straight, and a brim is formed. During rupture, the initial film thickness increases globally, despite the smectic layer structure. Then, the recession of the film edge is accompanied by undulations of the bubble surface in the micrometer range.