Coalescence-induced droplet jumping

• Main Authors: Liu, Chuntian, Zhao, Meirong, Zheng, Yelong, Cheng, Luya, Zhang, Jiale, Tee, Clarence Augustine T. H.
• Format: Article
• Published: American Chemical Society 2021
• Subjects: QD Chemistry
• Online Access: http://eprints.um.edu.my/28242/
• Institution: Universiti Malaya

When two or more droplets coalesce on a superhydrophobic surface, the merged droplet can jump spontaneously from the surface without requiring any external energy. This phenomenon is defined as coalescence-induced droplet jumping and has received significant attention due to its potential applications in a variety of self-cleaning, anti-icing, antifrosting and condensation heat-transfer enhancement uses. This article reviews the research and applications of coalescence-induced droplet jumping behavior in recent years, including the influence of droplet parameters on coalescence-induced droplet jumping, such as the droplet size, number, and initial velocity, to name a few. The main structure types and influence mechanism of the superhydrophobic substrates for coalescence-induced droplet jumping are described, and the potential application areas of coalescence-induced droplet jumping are summarized and forecasted.