Lubricant self-replenishing slippery surface with prolonged service life for fog harvesting

Abstract Slippery lubricant-infused surfaces exhibit excellent fog-harvesting capacities compared with superhydrophobic and superhydrophilic surfaces. However, lubricant depletion is typically unavoidable under dynamic conditions, reinfused oil generally needed to recover the capacity. Herein, an effective strategy for delaying of prolong service life fog harvesting proposed. An ultrathin transparent self-replenishing slippery surface was fabricated via facile one-step solvent evaporation polymerization. The gel film surface, which embedded microdroplets, attached glass slides phase separation tetrahydrofuran. GFs-150 (with content 150 wt% aminopropyl-terminated polydimethyl siloxane (PDMS-NH 2 )) exhibited superior performance other films. Furthermore, trait secretion triggered by mechanical stress better capabilities longer than without function self-replenishment. self-replenishing, ultrathin, reported herein have considerable potential applications involving narrow spaces, visualization, long life, etc.