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  • Durable deicing lubricant-i...
    Wu, Dequan; Ma, Lingwei; Zhang, Fan; Qian, Hongchang; Minhas, Badar; Yang, Yumin; Han, Xiao; Zhang, Dawei

    Materials & design, 01/2020, Volume: 185
    Journal Article

    Lubricant infused surfaces (LISs) are promising platforms to address the icing problems, but their long-term stability remains a significant challenge. In this study, a durable LIS with photothermal response and reversible solid/liquid transformation was fabricated to rapidly thaw frost accumulation and reduce ice accretion. The newly designed LIS was manufactured by infusing low-melting cocoa oil and efficient photothermal Fe3O4 nanoparticles into anodized aluminum oxide substrate. Upon irradiation with infrared light, the Fe3O4 nanoparticles could absorb light energy and melt the solid lubricant into slippery liquid. The dual actions of surface heating and slipperiness of melted lubricant promoted the thawing of frost/ice and de-adhesion of ice block. Additionally, the durability of LIS was strengthened by the combination of the self-healing effect of the melted lubricant, and the robustness of the solid state. The hydrophobic lubricant diminished the lubricant loss during repeating freezing/unfreezing cycles and withstood longtime flowing water impact. The proposed concept of switchable hydrophobic/slippery lubricant will advance the design of durable LISs and provide a promising LIS platform for deicing application. Display omitted •The lubricant infused surface was fabricated by infusing cocoa oil and Fe3O4 into anodic aluminum oxide.•The lubricant could be melted by heating at 46 °C due to the photothermal effect of Fe3O4.•The surface possessed low ice adhesion (0.3 KPa) and efficient defrost/deicing performance.•The melted lubricant repaired the defects and the solid lubricant could withstand fluid impact.