Propulsion on a superhydrophobic ratchet.
Ontology highlight
ABSTRACT:
SUBMITTER: Dupeux G
PROVIDER: S-EPMC4055890 | biostudies-literature | 2014
REPOSITORIES: biostudies-literature
Publications
Propulsion on a superhydrophobic ratchet.
Dupeux Guillaume G Bourrianne Philippe P Magdelaine Quentin Q Clanet Christophe C Quéré David D
Scientific reports 20140613
Liquids in the Leidenfrost state were shown by Linke to self-propel if placed on ratchets. The vapour flow below the liquid rectified by the asymmetric teeth entrains levitating drops by viscosity. This effect is observed above the Leidenfrost temperature of the substrate, typically 200°C for water. Here we show that coating ratchets with super-hydrophobic microtextures extends quick self-propulsion down to a substrate temperature of 100°C, which exploits the persistence of Leidenfrost state wit ...[more]
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