Yang Qiucheng, Yang Jinlong, Hu Yuhao, Niu Xiaopeng, Liu Zhenda, Zou Jian, Guo Junchang, Xiong Hao, Gu Xingshi, Yang Li, Yu Fanfei, Zhu Shunpeng, Ye Ming, Yi Xian, Deng Xu
Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China.
School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China.
Natl Sci Rev. 2025 Jan 13;12(3):nwaf005. doi: 10.1093/nsr/nwaf005. eCollection 2025 Mar.
Fracture-based interfacial breakage has shown promise in efficiently removing ice accretion. Here, intrigued by the response of human skin to stress-induced deformation, we present a strategy to design tough-skin de-icing surfaces (TSDSs) that actively manipulate crack-induced ice-substrate interfacial breakage during ice removal. This design leverages the surface instability of thin films to generate extensive wrinkling at the ice-substrate interface, which serves as crack initiation sites. We demonstrate efficient ice shedding by creating wrinkles at two length scales: macro-wrinkles for actively initiating the cracks at the rim of the ice and micro-wrinkles for further promoting the stress concentration at the ice-substrate interface. The TSDS ( < 10 kPa) displays excellent durability and weather resistance, achieving a large-area ice-self-shedding effect solely through gravity. The universality of the proposed mechanism is verified on multiple materials and potential applications. This design concept offers valuable insights into the creation of durable de-icing materials with enhanced ice-shedding properties.
基于断裂的界面破裂在有效去除积冰方面已显示出前景。在此，受人类皮肤对应力诱导变形的响应启发，我们提出一种设计坚韧皮肤除冰表面（TSDSs）的策略，该策略在除冰过程中积极操控裂纹诱导的冰与基底界面破裂。这种设计利用薄膜的表面不稳定性在冰与基底界面产生广泛的褶皱，这些褶皱作为裂纹起始位点。我们通过在两个长度尺度上产生褶皱来证明高效的冰脱落：宏观褶皱用于在冰边缘主动引发裂纹，微观褶皱用于进一步促进冰与基底界面的应力集中。TSDS（<10 kPa）表现出优异的耐久性和耐候性，仅通过重力就能实现大面积的冰自脱落效果。所提出机制的普遍性在多种材料和潜在应用上得到了验证。这一设计概念为创建具有增强除冰性能的耐用除冰材料提供了有价值的见解。
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