Superhydrophobic Lubrication: Gas–Liquid Bilayer Reduces the Friction Between Two Solids

Lubrication is one of the most important ways to reduce effect friction, which single largest cause for energy losses in society. Typically, friction reduction done by lubrication with petroleum-based oils, while technology focus shifting toward environmentally-friendly green lubrication. Lowest coefficients water-based have previously been achieved smooth surfaces such as silicon carbide and nitride or polyzwitterionic polymer brushes typical order 0.002. Here, a novel concept using bilayer water ambient air acting lubricant between hydrophilic superhydrophobic surface shown. This method achieves superlubricity down 0.002 measured oscillating tribometer tilting stage. In addition, possible applications tunable 2D mouse treadmill, are