Self-propelled dropwise condensate on superhydrophobic surfaces.


Journal Article

In conventional dropwise condensation on a hydrophobic surface, the condensate drops must be removed by external forces for continuous operation. This Letter reports continuous dropwise condensation spontaneously occurring on a superhydrophobic surface without any external forces. The spontaneous drop removal results from the surface energy released upon drop coalescence, which leads to a surprising out-of-plane jumping motion of the coalesced drops at a speed as high as 1 m/s. The jumping follows an inertial-capillary scaling and gives rise to a micrometric average diameter at steady state.

Full Text

Duke Authors

Cited Authors

  • Boreyko, JB; Chen, C-H

Published Date

  • October 26, 2009

Published In

Volume / Issue

  • 103 / 18

Start / End Page

  • 184501 -

PubMed ID

  • 19905808

Pubmed Central ID

  • 19905808

Electronic International Standard Serial Number (EISSN)

  • 1079-7114

International Standard Serial Number (ISSN)

  • 0031-9007

Digital Object Identifier (DOI)

  • 10.1103/physrevlett.103.184501


  • eng