Effect of a Superhydrophobic Surface Structure on Droplet Jumping Velocity
- 27 January 2021
- journal article
- research article
- Published by American Chemical Society (ACS) in Langmuir
- Vol. 37 (5), 1779-1787
- https://doi.org/10.1021/acs.langmuir.0c03094
Abstract
The coalescence-induced droplet jumping on superhydrophobic surfaces is fundamentally significant from an academic or practical viewpoint. However, approaches to enhance droplet jumping velocity are very limited. In this work, the effect of structural parameters of the triangular prism on droplet jumping is studied systematically. The results indicate that droplet jumping velocity can be greatly increased by exploiting structure effects, which is a promising reinforcement method. When the height and apex angle of the triangular prism are fixed, the droplet jumping velocity increases with the length of the triangular prism until a plateau is reached. The ratio of translational kinetic energy to released surface energy during droplet jumping is determined by the apex angle and the height of the triangular prism, which is more effective with a smaller apex angle and a larger height. The results are supposed to provide guidelines for optimization of superhydrophobic surfaces.Keywords
Funding Information
- National Natural Science Foundation of China (51836002)
- Fundamental Research Project of Midea Group (RB00020437)
This publication has 46 references indexed in Scilit:
- Energy and hydrodynamic analyses of coalescence-induced jumping dropletsApplied Physics Letters, 2013
- Self-cleaning of superhydrophobic surfaces by self-propelled jumping condensateProceedings of the National Academy of Sciences of the United States of America, 2013
- Anti-icing surfaces based on enhanced self-propelled jumping of condensed water microdropletsChemical Communications, 2013
- Jumping-Droplet-Enhanced Condensation on Scalable Superhydrophobic Nanostructured SurfacesNano Letters, 2012
- Why Condensate Drops Can Spontaneously Move Away on Some Superhydrophobic Surfaces but Not on OthersACS Applied Materials & Interfaces, 2012
- Hierarchically structured porous aluminum surfaces for high-efficient removal of condensed waterSoft Matter, 2012
- Nanograssed Micropyramidal Architectures for Continuous Dropwise CondensationAdvanced Functional Materials, 2011
- Size effect on the coalescence-induced self-propelled dropletApplied Physics Letters, 2011
- Self-Propelled Dropwise Condensate on Superhydrophobic SurfacesPhysical Review Letters, 2009
- Coalescence of liquid drops by surface tensionPhysical Review E, 2001