Fabrication of slippery liquid-infused porous surfaces for anti-fouling applications

Abstract Lubricant-infused textured surfaces have gained much attention as liquid-repellent owing to high surface stability compared their superhydrophobic counterparts. In this study, polydimethylsiloxane (PDMS) micro-structures (width: 20 μ m, height: 80 m), were fabricated using soft lithography. Effects of micro-structural geometry, including pillar-type (pillar, discrete ridge) and hole-type (hole, continuous ridge, circular rings with eight stripe supporters), on infiltration capability the lubricants different viscosity (Krytox-103; η : 0.131 Pa.s, Krytox-105; 0.737 paraffin oil; 0.112 Pa.s) investigated. Partial was observed micro-structures, while more completed obtained micro-structures. More viscous Krytox-105 resulted in for all thus creating a slippery liquid-infused porous (SLIPS). The best SLIPS, signified by low sliding angle fast speed water droplet, prepared from hole pattern infused exhibited good anti-fouling performance against chlorophyll milk yogurt.