### Session MH: Surface Tension Effects I

8:00 AM–10:10 AM, Tuesday, November 25, 2008
Room: 101B

Chair: Chao Sun, University of Twente

Abstract ID: BAPS.2008.DFD.MH.10

### Abstract: MH.00010 : Dynamical Origami

9:57 AM–10:10 AM

MathJax On | Off     Abstract

#### Authors:

Christophe Josserand
(Universit\'e Pierre et Marie Curie, Institut d'Alembert, Paris)

Arnaud Antkowiak
(Universit\'e Pierre et Marie Curie, Institut d'Alembert, Paris)

Fabien Ch\'eranc\'e
(Universit\'e Pierre et Marie Curie, Institut d'Alembert, Paris)

A drop falling on a thin elastic sheet is rapidly trapped after impact by self-folding of the sheet around the drop. This trapping process, due to capillary forces, occurs on the fast timescale of hydrophobic rebound. The resulting packed drop presents a complex three-dimensional shape, characteristic of the interplay between elasticity and capillarity (Py \textit{et al.}, \textit{Phys. Rev. Lett.} \textbf{98}, 2007). We study experimentally the encapsulation dynamics with high-speed video camera. A shape selection exhibited by the system is evidenced. The role played by the different parameters of impact (drop radius, impact velocity...) in the final shape of this dynamical origami'' is eventually discussed.

To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2008.DFD.MH.10