期刊
出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.2100978118
关键词
anti-icing; photothermal; condensate self-removal; ultrafast pulsed laser; deposition; surface micro-; nano-structuring
资金
- National Key Research and Development Program of China [2020YFE0100300, 2018YFA0208502, 2017YFB1104900]
- Chinese National Nature Science Foundation [21875261, 51925307, 21733010, 21805286, 52005022]
- Key Research Program of Frontier Sciences, CAS [ZDBSLYSLH031]
- Youth Innovation Promotion Association of the Chinese Academy of Sciences [2018044]
- NSF CAREER award [1724526]
- AFOSR [FA95501710311, FA95501810449, FA95502010344]
- U.S. Department of Defense (DOD) [FA95502010344, FA95501710311, FA95501810449] Funding Source: U.S. Department of Defense (DOD)
Inspired by wheat leaves, a novel condensate self-removing solar anti-icing/frosting surface has been developed, showing superhydrophobic and photothermal conversion performance, capable of keeping ice-free under extreme low temperature and high humidity conditions.
The inhibition of condensation freezing under extreme conditions (i.e., ultra-low temperature and high humidity) remains a daunting challenge in the field of anti-icing. As water vapor easily condensates or desublimates and melted water refreezes instantly, these cause significant performance decrease of most anti-icing surfaces at such extreme conditions. Herein, inspired by wheat leaves, an effective condensate self-removing solar anti-icing/frosting surface (CR-SAS) is fabricated using ultrafast pulsed laser deposition technology, which exhibits synergistic effects of enhanced condensate self-removal and efficient solar anti-icing. The superblack CR-SAS displays superior anti-reflection and photothermal conversion performance, benefiting from the light trapping effect in the micro/nano hierarchical structures and the thermoplasmonic effect of the iron oxide nanoparticles. Meanwhile, the CR-SAS displays superhydrophobicity to condensed water, which can be instantly shed off from the surface before freezing through self-propelled droplet jumping, thus leading to a continuously refreshed dry area available for sunlight absorption and photothermal conversion. Under one-sun illumination, the CR-SAS can be maintained ice free even under an ambient environment of ?50 ?C ultra-low temperature and extremely high humidity (ice supersaturation degree of ?260). The excellent environmental versatility, mechanical durability, and material adaptability make CR-SAS a promising anti-icing candidate for broad practical applications even in harsh environments.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据