Details

Autor(en) / Beteiligte

• Fan, Yue
• Wang, Shuai
• Huang, Yusheng
• Tan, Yao
• Gui, Lishuang
• Huang, Shilin
• Tian, Xuelin

Titel

Unconventional Dually‐Mobile Superrepellent Surfaces

Ist Teil von

• Advanced materials (Weinheim), 2024-07, Vol.36 (30), p.e2402893-n/a

Ort / Verlag

Germany: Wiley Subscription Services, Inc

Erscheinungsjahr

2024

Quelle

Wiley Online Library

Beschreibungen/Notizen

• The ability of water droplets to move freely on superrepellent surfaces is a crucial feature that enables effective liquid repellency. Common superrepellent surfaces allow free motion of droplets in the Cassie state, with the liquid resting on the surface textures. However, liquid impalement into the textures generally leads to a wetting transition to the Wenzel state and droplet immobilization on the surface, thereby destroying the liquid repellency. This study reports the creation of a novel type of superrepellent surface through rational structural control combined with liquid‐like surface chemistry, which allows for the free movement of water droplets and effective repellency in both the Cassie and Wenzel states. Theoretical guidelines for designing such surfaces are provided, and experimental results are consistent with theoretical analysis. Furthermore, this work demonstrates the enhanced ice resistance of the dually‐mobile superrepellent surfaces, along with their distinctive self‐cleaning capability to eliminate internal contaminants. This study expands the understanding of superrepellency and offers new possibilities for the development of repellent surfaces with exceptional anti‐wetting properties. Unconventional dually‐mobile superrepellent surfaces are designed by combining rationally controlled surface textures and liquid‐like surface chemistry, enabling droplets to keep highly mobile in both the Cassie and the Wenzel states. A theoretical model is established to explain the significantly reduced adhesion of Wenzel‐state droplets, which aligns closely with the experimental findings.