悬浮polymer同心环的毛细破裂
Capillary rupture of suspended polymer concentric rings
摘要：
我们提出了第一个实验研究的同时毛细不稳定性之间的粘性同心环悬浮在不混溶介质。退火后的环破裂，与三种类型的相邻环之间的相位相关性。在弱衬底约束的情况下，环破裂独立时，他们稀疏的距离，但通过一个异相模式时，包装更紧密。如果衬底限制很强，环将通过同相模式破裂，导致液滴径向排列。同心环的几何形状引起了相邻环的相位相关性和动力学上有利的波长之间的竞争，产生了一个有趣的，递归的表面图案。这种受抑制的斑图形成行为通过缩放分析来解释。
英文摘要：
We present the first experimental study on the simultaneous capillary instability amongst viscous concentric rings suspended atop an immiscible medium. The rings ruptured upon annealing, with three types of phase correlation between neighboring rings. In the case of weak substrate confinement, the rings ruptured independently when they were sparsely distanced, but via an out-of-phase mode when packed closer. If the substrate confinement was strong, the rings would rupture via an in-phase mode, resulting in radially aligned droplets. The concentric ring geometry caused a competition between the phase correlation of neighboring rings and the kinetically favorable wavelength, yielding an intriguing, recursive surface pattern. This frustrated pattern formation behavior was accounted for by a scaling analysis.
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