Excellent Dynamic Non‐Wetting Performance Induced by Asymmetric Structure at Low Temperatures: Retraction Actuation and Nucleation Inhibition
Abstract Asymmetric structures have exhibited significant advantages in regulating wetting behavior. Nevertheless, the influence of this unique structural feature on anti‐icing performance remains to be further explored. In this work, static/dynamic anti‐icing performance is investigated on the asym...
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| Format: | Article |
| Language: | English |
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Wiley
2025-04-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202500590 |
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| author | Jiawei Jiang Yizhou Shen Yangjiangshan Xu Zhen Wang Senyun Liu Yanyan Lin Jie Tao Zhong Chen |
| author_facet | Jiawei Jiang Yizhou Shen Yangjiangshan Xu Zhen Wang Senyun Liu Yanyan Lin Jie Tao Zhong Chen |
| author_sort | Jiawei Jiang |
| collection | DOAJ |
| description | Abstract Asymmetric structures have exhibited significant advantages in regulating wetting behavior. Nevertheless, the influence of this unique structural feature on anti‐icing performance remains to be further explored. In this work, static/dynamic anti‐icing performance is investigated on the asymmetric superhydrophobic structures fabricated by micro‐milling combined with electrodeposition. Notably, although the reduction of the degree of asymmetry increases the droplet adhesion force by augmenting the solid‐liquid interface, asymmetric structures can still enable the droplet to bounce off the surface through the horizontal Laplace force generated by the contact angle difference between the two sides of the droplet. On this basis, a dynamic behavior criterion for the droplet to detach from the surface is established at low temperatures. Molecular dynamics simulation indicates that the asymmetric structure can reduce the icing probability on the precursor film by inhibiting the nucleation and growth process of water molecules, decreasing the liquid‐ice interface, and reducing the adhesion under low temperatures. Generally, specific asymmetric structures with nucleation inhibition characteristics can reduce droplet adhesion and increase the driving force during the droplet retraction stage by enhancing the horizontal Laplace force, effectively improving the dynamic non‐wetting performance of the surface at even −40 °C. |
| format | Article |
| id | doaj-art-a235e70f5dc04f7aab6627c1eab80607 |
| institution | DOAJ |
| issn | 2198-3844 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj-art-a235e70f5dc04f7aab6627c1eab806072025-08-20T03:14:12ZengWileyAdvanced Science2198-38442025-04-011216n/an/a10.1002/advs.202500590Excellent Dynamic Non‐Wetting Performance Induced by Asymmetric Structure at Low Temperatures: Retraction Actuation and Nucleation InhibitionJiawei Jiang0Yizhou Shen1Yangjiangshan Xu2Zhen Wang3Senyun Liu4Yanyan Lin5Jie Tao6Zhong Chen7State Key Laboratory of Mechanics and Control for Aerospace Structures Nanjing University of Aeronautics and Astronautics No. 29 Yudao Street Nanjing 210016 P. R. ChinaState Key Laboratory of Mechanics and Control for Aerospace Structures Nanjing University of Aeronautics and Astronautics No. 29 Yudao Street Nanjing 210016 P. R. ChinaBeijing Blue Sky Innovation Center for Frontier Science Yard 11, anningzhuang Road, Haidian District Beijing 100080 P. R. ChinaState Key Laboratory of Mechanics and Control for Aerospace Structures Nanjing University of Aeronautics and Astronautics No. 29 Yudao Street Nanjing 210016 P. R. ChinaKey Laboratory of Icing and Anti/De‐icing China Aerodynamics Research and Development Center 6 Erhuan South Rd. Mianyang 621000 P. R. ChinaSchool of Materials Science and Engineering Nanjing Institute of Technology Nanjing 211167 P. R. ChinaState Key Laboratory of Mechanics and Control for Aerospace Structures Nanjing University of Aeronautics and Astronautics No. 29 Yudao Street Nanjing 210016 P. R. ChinaSchool of Materials Science and Engineering Nanyang Technological University 50 Nanyang Avenue Singapore 639798 SingaporeAbstract Asymmetric structures have exhibited significant advantages in regulating wetting behavior. Nevertheless, the influence of this unique structural feature on anti‐icing performance remains to be further explored. In this work, static/dynamic anti‐icing performance is investigated on the asymmetric superhydrophobic structures fabricated by micro‐milling combined with electrodeposition. Notably, although the reduction of the degree of asymmetry increases the droplet adhesion force by augmenting the solid‐liquid interface, asymmetric structures can still enable the droplet to bounce off the surface through the horizontal Laplace force generated by the contact angle difference between the two sides of the droplet. On this basis, a dynamic behavior criterion for the droplet to detach from the surface is established at low temperatures. Molecular dynamics simulation indicates that the asymmetric structure can reduce the icing probability on the precursor film by inhibiting the nucleation and growth process of water molecules, decreasing the liquid‐ice interface, and reducing the adhesion under low temperatures. Generally, specific asymmetric structures with nucleation inhibition characteristics can reduce droplet adhesion and increase the driving force during the droplet retraction stage by enhancing the horizontal Laplace force, effectively improving the dynamic non‐wetting performance of the surface at even −40 °C.https://doi.org/10.1002/advs.202500590asymmetric structuredroplet impacthorizontal laplace forceice nucleationsuperhydrophobic |
| spellingShingle | Jiawei Jiang Yizhou Shen Yangjiangshan Xu Zhen Wang Senyun Liu Yanyan Lin Jie Tao Zhong Chen Excellent Dynamic Non‐Wetting Performance Induced by Asymmetric Structure at Low Temperatures: Retraction Actuation and Nucleation Inhibition Advanced Science asymmetric structure droplet impact horizontal laplace force ice nucleation superhydrophobic |
| title | Excellent Dynamic Non‐Wetting Performance Induced by Asymmetric Structure at Low Temperatures: Retraction Actuation and Nucleation Inhibition |
| title_full | Excellent Dynamic Non‐Wetting Performance Induced by Asymmetric Structure at Low Temperatures: Retraction Actuation and Nucleation Inhibition |
| title_fullStr | Excellent Dynamic Non‐Wetting Performance Induced by Asymmetric Structure at Low Temperatures: Retraction Actuation and Nucleation Inhibition |
| title_full_unstemmed | Excellent Dynamic Non‐Wetting Performance Induced by Asymmetric Structure at Low Temperatures: Retraction Actuation and Nucleation Inhibition |
| title_short | Excellent Dynamic Non‐Wetting Performance Induced by Asymmetric Structure at Low Temperatures: Retraction Actuation and Nucleation Inhibition |
| title_sort | excellent dynamic non wetting performance induced by asymmetric structure at low temperatures retraction actuation and nucleation inhibition |
| topic | asymmetric structure droplet impact horizontal laplace force ice nucleation superhydrophobic |
| url | https://doi.org/10.1002/advs.202500590 |
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