News Release

能自清除凝结的抗结冰材料

Peer-Reviewed Publication

Proceedings of the National Academy of Sciences

Inspired by wheat leaves

image: Inspired by wheat leaves, micro/nano hierarchical structured condensate self-removing solar anti-icing/frosting surface were fabricated. view more 

Credit: Image credit: Hongqiang Zhang, Guanlei Zhao, Zhiyuan He, and Ximin He.

科研人员报告说开发出了一种抗结冰材料,它能够通过自推动的液滴弹跳让凝结水脱落。开发抗结冰材料的挑战包括低温和高湿度,这些情况都可能导致水的凝结、融化的水的快速重新冻结,以及反射率的增加,这限制了吸收太阳能的材料的有效性。Ximin He, Zhiyuan He及其同事开发出了一种材料,它能消除凝结的水,让光热材料提高表面温度。这种材料的设计是受到了小麦叶片的启发,小麦叶片能通过导致凝结水液滴自我推动离开表面从而消除凝结和尘埃。这种使用超快脉冲激光沉积制成的材料是超黑且具有光热性能的,并且含有氧化铁纳米颗粒。此外,这种材料是超疏水性的,以至于融化的水在冻结之前自我推动离开了这种材料。实验提示,这种材料的表面在低至零下五十摄氏度和高湿度的条件下保持无冰。这组作者说,这种材料在广泛的环境条件下保持无冰表面的能力可能让它适合一大批抗结冰应用。

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