Journal
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
Volume 108, Issue 26, Pages 10400-10404Publisher
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1101738108
Keywords
elastocapillarity; microfabrication; dynamic self-assembly; thin films; surface tension
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Funding
- L'Agence Nationale de la Recherche [ANR-09-JCJC-0022-01]
- Agence Nationale de la Recherche (ANR) [ANR-09-JCJC-0022] Funding Source: Agence Nationale de la Recherche (ANR)
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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.
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