Visualization of droplet departure on a superhydrophobic surface and implications to heat transfer enhancement during dropwise condensation

By C. Dietz, K. Rykaczewski, A. Fedorov, Yogendra K. Joshi. 2010

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Dropwise Condensation on Micro- and Nanostructured Surfaces (2014, background): “The jumping motion has been applied to a variety of phase-change systems [107], including superhydrophobic surfaces that are anti-dew and/or anti-icing [43, 48, 122–124], enabling the possibility to enhance DWC with nanostructured surfaces [38, 42, 45, 103, 125, 126].”
Modeling and Optimization of Superhydrophobic Condensation (2013, methodology): “To promote dropwise condensation, the use of self-assembled monolayers (SAMs) has emerged as popular and robust technique to obtain reduced surface energies [4, 10, 12, 14, 19, 22-24, 29, 32, 38, 47, 54, 55].”
Vapor chambers with jumping-drop liquid return from superhydrophobic condensers (2013, background): “The kinetic energy required for the jumping-drop phenomenon is harvested from the surface energy released upon coalescence [11–17], and the out-of-plane directionality is a result of the superhydrophobic surface breaking the symmetry of energy release [12,18].”
Condensation on superhydrophobic copper oxide nanostructures (2012, background): “Indeed, while recent experimental studies have explored droplet wetting-states formed during condensation on structured surfaces fabricated via scalable synthesis methods [6-13], the measurement of individual droplet heat transfer rates obtained from detailed growth studies and overall heat transfer”