Condensation and jumping relay of droplets on lotus leaf

By C. Lv, P. Hao, Z. Yao, Yu Song, Xiwen Zhang, Feng He. 2013

149 citations recorded by the source corpus.

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° to 160° during the growth of condensed water. The best-known “self-cleaning” 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. The underlying mechanism can be used to 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.

Subfields: Computational Mechanics, Electrical and Electronic Engineering, Surfaces, Coatings and Films

View Paper: https://www.semanticscholar.org/paper/3be526bd53c940034115b7802e310232ec1024eb

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In Computational Mechanics

In Electrical and Electronic Engineering

In Surfaces, Coatings and Films

Citations in the corpus

Numerical simulations of self-propelled jumping upon drop coalescence on non-wetting surfaces (2014, methodology): “…modelling efforts are mostly based on energetic arguments with no detailed account of the flow physics, and an ad hoc form of viscous dissipation has often been assumed for the energy balance (Wang, Yang & Zhao 2011; Liu et al. 2012; Lv et al. 2013; Peng et al. 2013; Liu, Cheng & Quan 2014b).”