Multi-biomimetic\nDouble Interlaced Wetting Janus Surface\nfor Efficient Fog Collection

Abstract

Various methods to solve water scarcity have attracted\nincreasing\nattention. However, most existing water harvesting schemes have a\nhigh demand for preparation methods and costs. Here, a multi-biomimetic\ndouble interlaced wetting Janus surface (DIWJS) was prepared by laser\nfor effective fog collection. The as-prepared surfaces are composed\nof superhydrophilic points/hydrophobic substrates on the A-side and\nsuperhydrophilic stripes/hydrophobic substrates on the B-side. The\ninterlaced wettability and superhydrophilic points on the A side are\nconducive to capture and permeation of droplets. The superhydrophilic\nstripes and interlaced wettability on the B-side are conducive to\ntransportation and shedding of droplets. Therefore, the overall fog\ncollection process is accelerated. The proposal of smart farm model\nvalidates broad application prospects of DIWJS. This work provides\nan advanced and multi-biomimetic surface and provides important insights\nfor green, low-cost, and versatile strategies to solve water scarcity\nissues.