Origami-like 3D Fog Water Harvestor with Hybrid Wettability for Efficient Fog Harvesting.

Collecting water in fog has also become a breakthrough to solve the hidden danger of water shortage in some arid areas. The three-dimensional (3D) structure fog collection material can increase the surface area in direct contact with the fog flow and reduce the quick flow of fog, which can effectively improve the fog collection efficiency. Imitating the three-dimensional structure of corrugated paper, the 3D fog collecting material with hybrid wettability was prepared by chemical and physical means.

Biomimetic fluorine-free 3D alternating hydrophilic-superhydrophobic surfaces with different bump morphologies for efficient water harvesting.

Biomimetic 3D hydrophilic-superhydrophobic hybrid surfaces with bump structures were prepared by a combination of spin-coating and high-temperature calcination. How wettability and different bulge morphologies affect droplet capture and removal behavior were compared and analyzed. Hydrophilic-superhydrophobic hybrid PDMS@copper with linear bumps showed the best water-collecting performance, bettering by 151% the original copper sheet and showing a 135% improvement over a superhydrophobic surface without bulges.

Anisotropic Janus materials: from micro-/nanostructures to applications.

Janus materials have led to great achievements in recent years owing to their unique asymmetric structures and properties. In this review, recent advances of Janus materials including Janus particles and Janus membranes are summarized, and then the microstructures and applications of Janus materials are emphasized. The asymmetric wettability of Janus materials is related to their microstructures; hence, the microstructures of Janus materials were analyzed, compared and summarized.