Sébastien Neukirch
Institut Jean le Rond d'Alembert
Centre National de la Recherche Scientifique
Université Pierre et Marie Curie
Paris, France

tel: +33 1 44 27 72 61
fax : +33 1 44 27 52 59
e-mail: sebastien.neukirch (-atat-) upmc.fr

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Instant fabrication and selection of folded structures using drop impact

A. Antkowiak, B. Audoly, C. Josserand, S. Neukirch, and M. Rivetti

Proceedings of the National Academy of Sciences, USA 108 (2011) 10400-10404

Abstract : 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.

Key words : elastocapillarity, microfabrication, dynamic self-assembly, thin films, surface tension

DOI: 10.1073/pnas.1101738108


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