title: Dynamic Melting of Freezing Droplets on Ultraslippery Superhydrophobic Surfaces.
abstract: Condensed droplet freezing and freezing droplet melting phenomena on the prepared ultraslippery superhydrophobic surface were observed and discussed in this study. Although the freezing delay performance of the surface is common, the melting of the freezing droplets on the surface is quite interesting. Three self-propelled movements of the melting droplets (ice- water mixture) were found including the droplet rotating, the droplet jumping, and the droplet sliding. The melting droplet rotating, which means that the melting droplet rotates spontaneously on the superhydrophobic surface like a spinning top, is first reported in this study and may have some potential applications in various engineering fields. The melting droplet jumping and sliding are similar to those occurring during condensation but have larger size scale and motion scale, as the melting droplets have extra-large specific surface area with much more surface energy available. These self-propelled movements make all the melting droplets on the superhydrophobic surface dynamic, easily removed, which may be promising for the anti-icing/frosting applications.
authors.affiliation: Department of Thermal Engineering, Beijing Key Laboratory for CO2 Utilization and Reduction Technology, Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Tsinghua University , Beijing 100084, China.
authors.forename: Fuqiang
authors.initials: F
authors.lastname: Chu
authors.affiliation: Department of Thermal Engineering, Beijing Key Laboratory for CO2 Utilization and Reduction Technology, Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Tsinghua University , Beijing 100084, China.
authors.forename: Xiaomin
authors.identifier: http://orcid.org/0000-0001-7703-0038
authors.initials: X
authors.lastname: Wu
authors.affiliation: Department of Thermal Engineering, Beijing Key Laboratory for CO2 Utilization and Reduction Technology, Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Tsinghua University , Beijing 100084, China.
authors.forename: Lingli
authors.initials: L
authors.lastname: Wang
keywords: droplet rotating; dynamic melting; freezing; self-propelled movement; superhydrophobic surface