Ruiyuan Ma

TL;DR: In this paper, a hierarchical (multiscale) nanograssed micropyramid architecture that yields a gobal superhydrophobicity as well as locally wettable nucleation sites is proposed.

TL;DR: Through global interfacial energy analysis, it is revealed that, when the size of the evaporating droplet becomes comparable to the surface roughness, the line tension at the triple line becomes important in the prediction of the critical base size.

TL;DR: A hierarchical surface which allows for interdroplet freezing wave propagation suppression and efficient frost removal and the concept of harnessing the surface morphology to achieve superior performances in two opposite phase transition processes might shed new light on the development of novel materials for various applications.

TL;DR: It shows that the instantaneous Cassie state of condensed droplets prior to coalescence plays a key role in determining whether the coalesced drop departs, whereas only SHS possessing nanostructures with small enough Wenzel roughness parameter r and nanogaps forming high enough Laplace pressure favors the formation of the instantaneousCassie state.

TL;DR: In this paper, the authors show that the local Cassie-to-Wenzel transition in the droplet is critical for self-propelling against the wettability gradient.