Instant fabrication and selection of folded structures using drop impact.


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.

DOI: 10.1073/pnas.1101738108

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@article{Antkowiak2011InstantFA, title={Instant fabrication and selection of folded structures using drop impact.}, author={Arnaud Antkowiak and Basile Audoly and C. Josserand and Sebastien Neukirch and Marco Rivetti}, journal={Proceedings of the National Academy of Sciences of the United States of America}, year={2011}, volume={108 26}, pages={10400-4} }