Condensation and jumping relay of droplets on lotus leaf

Abstract

Dynamic behavior of micro water droplet condensed on a lotus leaf with two-tier roughness is studied. Under laboratory environment, the contact angle of the micro droplet on single micro papilla increases smoothly from 80 deg to 160 deg during the growth of condensed water. The best-known "self-clean" phenomenon, will be lost. A striking observation is the out-of-plane jumping relay of condensed droplets triggered by falling droplets, as well as its sustained speed obtained in continuous jumping relays, enhance the automatic removal of dropwise condensation without the help from any external force. The surface tension energy dissipation is the main reason controlling the critical size of jumping droplet and its onset velocity of rebounding.

14 pages, 8 figures

References in corpus (3)

• Condensation and jumping relay of droplets on lotus leaf
• Breath Figures: Nucleation, Growth, Coalescence, and the Size Distribution of Droplets
• Liquid Hertz Contact: softness of weakly deformed drops on non-wetting substrates

Cited by in corpus (7)

• Condensation and jumping relay of droplets on lotus leaf
• Self-cleaning of hydrophobic rough surfaces by coalescence-induced wetting transition
• Condensation Droplet Sieve
• Sequential Self-Propelled Morphology Transitions of Nanoscale Condensates Diversify the Jumping-Droplet Condensation
• Analytical prediction of electrowetting-induced jumping motion for droplets on textured hydrophobic substrates: Effects of the wetting states
• Why and when merging surface nanobubbles jump
• How fast do microdroplets generated during liquid-liquid phase separation move in a confined 2D space?