Energy criteria for elasto-capillary wrapping
Energy criteria for elasto-capillary wrapping
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DOI：
10.1016/j.jfluidstructs.2009.10.004
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发表时间：
2010-02-01
影响因子：
3.6
通讯作者：
Reverdy, P.
中科院分区：
文献类型：
--
作者：
de Langre, E.;Baroud, C. N.;Reverdy, P.
我们考虑液滴和柔性膜之间的相互作用，这是一个流体结构问题，其中毛细管现象是主要的流体贡献。最近的工作表明，如果膜的典型尺寸高于临界长度，则可以利用表面张力来弯曲弹性膜。在这里，我们讨论了一些更详细的实验测量，这些测量证明了不同折叠模式之间的切换以及膜折叠过程中的去湿转变。然后根据能量方法开发一个模型，并显示可以解释所有观察到的现象。与更精细的建模相反，最小模型可以扩展到更复杂的情况，几乎不需要额外的工作，使其可用于复杂的几何形状或包含更多的物理成分。 (C) 2009 Elsevier Ltd. 保留所有权利。
We consider the interaction between a liquid drop and a flexible membrane, a fluid-structure problem where capillarity is the dominant fluid contribution. Recent work has shown that surface tension may be used to bend an elastic membrane if the typical scale of the membrane is above a critical length. Here, we discuss some more detailed experimental measurements that demonstrate the switching between different modes of folding as well as a dewetting transition during the folding of the membrane. A model is then developed, based on an energy approach, and shown to account for all of the observed phenomena. Contrary to more refined modelling, the minimal model may be extended to more complex cases with little extra work, making it useful for complex geometries or in order to include further physical ingredients. (C) 2009 Elsevier Ltd. All rights reserved.