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Droplets bouncing on superhydrophobic surfaces

Julia M Yeomans
Theoretical Physics
1 Keble Road
Oxford OX1 3NP, UK

Drops bounce easily on superhydrophobic surfaces because of low friction. We discuss how the design of the surface can affect the bouncing, leading to a droplet leaving the surface shaped as a flattened disc or an extended cylinder. Simulations and simple theories are used to help understand the reasons behind the unusual bouncing pathways.