New research reveals how surface roughness can repel all liquids!
Superliquid-repelling surfaces are important but understanding how surface roughness affects their properties is unclear. By studying randomly distributed rough structures, researchers found that controlling surface roughness impacts the wettability of these surfaces. Small increases in roughness lead to low changes in wettability, making the surface superhydrophobic. Larger increases in roughness result in higher changes in wettability, turning the surface superamphiphobic. This discovery will help in creating better superliquid-repelling surfaces in the future.