A company called NBD Nano claims to have developed a surface coating that mimics the surface of the hardened wings of the Namib Desert Beetle which has become famous for its ability to collect fog droplets for its water requirements. The unique beetle wings have alternating zones of hydrophilic and hydrophobic surfaces. The company appears to be claiming that its proprietary surface design can attract water molecules directly from the air to form liquid water (dehumidification). In contrast, the beetle is capturing liquid water droplets (fog harvesting). NBD Nano is currently running a competition for an atmospheric water generator design.
A German non-profit foundation, Alpha Spring, has been researching and developing a liquid desiccant type water-from-air system for several years. A prototype has operated successfully for over a year in southern Germany. The foundation is now crowd-sourcing on indiegogo to fund construction of their pilot installation in a region with water-scarcity. Visit the foundation's website and their indiegogo crowd-sourcing page (which includes a video) for more details.
I have been researching and developing drinking-water-from-air technologies since 1984. As a physical geographer, I strive to contribute an accurate, scientific point-of-view to the field.