Centre National de Recherche Scientifique and Université Pierre et Marie Curie, Unité Mixte de Recherche 7190, Institut Jean Le Rond d'Alembert, 4 Place Jussieu, F-75005 Paris, France.
Proc Natl Acad Sci U S A. 2011 Jun 28;108(26):10400-4. doi: 10.1073/pnas.1101738108. Epub 2011 Jun 13.
A drop impacting a target cutout in a thin polymer film is wrapped by the film in a dynamic sequence involving both capillary forces and inertia. Different 3D structures can be produced from a given target by slightly varying the impact parameters. A simplified model for a nonlinear dynamic Elastica coupled with a drop successfully explains this shape selection and yields detailed quantitative agreement with experiments. This first venture into the largely unexplored dynamics of elastocapillary assemblies opens up the perspective of mass production of 3D packages with individual shape selection.
液滴冲击聚合物薄膜上的切口时，在表面张力和惯性力的共同作用下，薄膜会发生动态包裹过程。通过略微改变冲击参数，可以从给定的目标中产生不同的 3D 结构。一个成功解释这种形状选择的非线性动态弹性力学与液滴的简化模型，以及与实验的详细定量一致性。这是首次涉足弹性毛细管组件的广阔领域，为具有个体形状选择的 3D 封装的大规模生产开辟了前景。
