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説明:

Largely varied anti-icing performance among superhydrophobic surfaces remains perplexing and challenging. Herein, the issue is elucidated by exploring the roles of surface chemistry and surface topography in anti-icing. Three superhydrophobic surfaces, i.e., gecko-like, petal-like, and lotus-like surfaces, together with smooth hydrophobic and hydrophilic surfaces, are prepared and compared in ice nucleation temperature under both non-condensation and condensation conditions. As a result, in non-condensation condition, water droplet freezing is caused by interfacial heterogeneous nucleation, wherein both surface chemistry and surface topography contribute to deferring freezing, and the former is dominant. In condensation condition, the freezing strongly correlates to condensation frosting. Surface chemistry maintains as a strong deterrent, whereas surface topography has two competing effects on the freezing. The paper deepens the understanding of water freezing on superhydrophobic surfaces, unravels the correlation between superhydrophobicity and anti-icing, and provides design guidelines on application-oriented anti-icing surfaces.

権利情報:

• Creative Commons BY Attribution 4.0 International
  

キーワード: superhydrophobic, anti-icing, surface chemistry, surface topography, heterogeneous nucleation, condensation frosting

刊行年月日: 2024-09-28

出版者: Elsevier BV

掲載誌:

• iScience (ISSN: 25890042) vol. 27 issue. 11 111039

研究助成金:

• Japan Science and Technology Agency JPMJCR19J3 (Core Research for Evolutional Science and Technology)

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1016/j.isci.2024.111039

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更新時刻: 2024-12-17 16:30:57 +0900

MDRでの公開時刻: 2024-12-17 16:30:57 +0900