Superhydrophobic surface: Difference between revisions
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'''Superhydrophobic surfaces''' can delay ice formation by their water repellent surface. Hydrophobicity increases the [[Ice adhesion|droplet movement]], which can reduce icing. Droplets movement on the surface is dependent on the contact angle. Studies have shown, that when the contact angle grows, the ice adhesion strength decreases. | '''Superhydrophobic surfaces''' can delay ice formation by their water repellent surface. Hydrophobicity increases the [[Ice adhesion|droplet movement]], which can reduce icing. During freezing, water will penetrate the topography of a surface, which increases the ice-surface- contact area that increases the ice adhesion strength. Low interactions between the surface and water lead to hydrophobicity of the surface. Hydrophobicity has been discussed to lead to icephobicity of the surface due to low interactions. Good icephobic coatings have the proper combination of wettability (hydrophobic or superhydrophobic), suitable surface roughness and low surface free energy. Droplets movement on the surface is dependent on the contact angle. Studies have shown, that when the contact angle grows, the ice adhesion strength decreases. | ||
'''Superhydrophobicity''' has been shown as a possible option for icephobicity. However, some studies have shown, that superhydrophobicity does not always mean good icephobicity. One of the main problems against using superhydrophobic surface for icephobicity is that the surface is damaged by icing. Another problem encountered in studies is humidity. In a very humid atmosphere, the anti-icing of superhydrophobic surfaces is greatly diminished. | '''Superhydrophobicity''' has been shown as a possible option for icephobicity. However, some studies have shown, that superhydrophobicity does not always mean good icephobicity. One of the main problems against using superhydrophobic surface for icephobicity is that the surface is damaged by icing. Another problem encountered in studies is humidity. In a very humid atmosphere, the anti-icing of superhydrophobic surfaces is greatly diminished. | ||
More on this topic: | More on this topic: | ||
[[Coating material|coating material,]] | [[Coating material|coating material,]] | ||
[[Ice-phobic surface|ice-phobic surface,]] | [[Ice-phobic surface|ice-phobic surface,]] | ||
[[microroughness and nanoroughness|microroughness and nanoroughness.]] | [[microroughness and nanoroughness|microroughness and nanoroughness.]] | ||
Revision as of 13:24, 18 January 2022
Superhydrophobic surfaces can delay ice formation by their water repellent surface. Hydrophobicity increases the droplet movement, which can reduce icing. During freezing, water will penetrate the topography of a surface, which increases the ice-surface- contact area that increases the ice adhesion strength. Low interactions between the surface and water lead to hydrophobicity of the surface. Hydrophobicity has been discussed to lead to icephobicity of the surface due to low interactions. Good icephobic coatings have the proper combination of wettability (hydrophobic or superhydrophobic), suitable surface roughness and low surface free energy. Droplets movement on the surface is dependent on the contact angle. Studies have shown, that when the contact angle grows, the ice adhesion strength decreases.
Superhydrophobicity has been shown as a possible option for icephobicity. However, some studies have shown, that superhydrophobicity does not always mean good icephobicity. One of the main problems against using superhydrophobic surface for icephobicity is that the surface is damaged by icing. Another problem encountered in studies is humidity. In a very humid atmosphere, the anti-icing of superhydrophobic surfaces is greatly diminished.
microroughness and nanoroughness.
- ↑ Li, G. (2018). Fundamentals of icing and common strategies for designing biomimetic anti-icing surfaces. Journal of Materials Chemistry. A, Materials for Energy and Sustainability, 6(28), 13549–13581.
- ↑ Ingvaldsen, K. (2017) Atmospheric icing in a changing climate: Impact of higher boundary temperatures on simulations of atmospheric ice accretion on structures during the 2015-2016 icing winter in West-Norway.
- ↑ Meuler, A. J. et al. (2010) Relationships between water wettability and ice adhesion., ACS applied materials & interfaces, Vol. 2, No. 11, 2010, pp. 3100– 10.
- ↑ Stenroos, C. (2015) Properties of icephobic surfaces in different icing conditions.
- ↑ Jeevahan, J. (2018). Superhydrophobic surfaces: a review on fundamentals, applications, and challenges. Journal of Coatings Technology and Research, 15(2), 231–250.
- ↑ Farhadi, F. (2011). Anti-icing performance of superhydrophobic surfaces. Applied Surface Science, 257(14), 6264–6269.
- ↑ Antonini, I. (2011). Understanding the effect of superhydrophobic coatings on energy reduction in anti-icing systems. Cold Regions Science and Technology, 67(1), 58–67.