Patten shape effects on condensation on hybrid-wetting surfaces

Directional Wetting on Patterned Surfaces

Wetting transitions on biomimetic surfaces.

Biomimetic hierarchical surfaces demonstrate a potential for a variety of green technologies, including energy conversion and conservation, owing to their remarkable water repellence. The design of such surfaces allowing emerging green applications remains a challenging scientific and technological task. Understanding the physical mechanism of wetting transitions (WTs) is crucial for the design...

Condensation and Wetting Behavior on Surfaces With Micro-Structures: Super-Hydrophobic and Super-Hydrophilic

Recently it has become possible to achieve radical manipulation of surface wettability, and wettability is known to play a key role in the retention of condensate and frost melt on heat exchanger surfaces. In this paper we present a review of methods to produce such surfaces, and we describe a super-hydrophobic surface, with a contact angle of 148°, created in our lab. We describe surfaces with...

Wetting and friction on superoleophobic surfaces

This article describes the physics of superoleophobic surfaces, combining a recently developed free-energy approach and finite element modeling. We start by investigating the peculiar wetting behavior of such surfaces, originating in their “re-entrant” geometry, and discussing a specific mechanism for the “filling transition”, leading to the loss of superoleophobicity. We then focus on their fr...

Wetting and Prewetting on Ceramic Surfaces

The stabilization of nanoscale surficial amorphous films (SAFs) for Bi2O3 on ZnO, VOx on TiO2, SiOx on Si, and several other oxide systems provides evidence for the existence of prewetting phenomena with analogies in water and other simple systems, as well as the stabilization of intergranular amorphous films in ceramics. Experimental results show that in the subeutectic regime, the equilibrium...