Fabrication of hierarchically textured aluminum-based superhydrophobic surfaces for anti-frosting application

Thomas, Tibin M.; Mahapatra, Pallab Sinha

doi:10.1016/j.matpr.2021.11.211

Cited by 2 publications

(2 citation statements)

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“…Ice and frost accretion poses significant economic and safety challenges. 3 For example, as ice and frost accretion happen on aircraft wings and propellers, it can alter their aerodynamic characteristics, increase flight drag, and potentially result in catastrophic safety incidents. Therefore, there is extensive concern and research on the formation of frost and the methods of defrosting.…”

Section: Introductionmentioning

confidence: 99%

“…Originally employed in construction, aluminum has now found extensive application in diverse manufacturing sectors, including aviation, automobile, railway, and maritime industries, where ice and frost accretion on surfaces happens. Ice and frost accretion poses significant economic and safety challenges . For example, as ice and frost accretion happen on aircraft wings and propellers, it can alter their aerodynamic characteristics, increase flight drag, and potentially result in catastrophic safety incidents.…”

Section: Introductionmentioning

confidence: 99%

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Guiding Ambient Vapor to Condense at the Fixed Pattern on Micronano Hierarchically Aluminum Substrate for Antifrost Application

Cui,

Yin,

Zhou

et al. 2024

ACS Appl. Nano Mater.

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Vapor spontaneously diffuses from areas of high concentration to areas of low concentration as a consequence of the Second Law of Thermodynamics and the hunt for maximum entropy. The distribution of substances with lower saturated vapor pressures on a surface can create this concentration slope in the space. However, most substances, except ice, cannot maintain this slope because humidity sinking causes their saturated vapor pressure to drop. Moreover, the location of ice growth is difficult to control. In this paper, a pattern of CaCl 2 was made on the micronano hierarchically aluminum substrate. When the temperature drops below zero, the vapor pressure at the position where CaCl 2 is located is low relative to that of water as a way to achieve a continuous phase transition from solid CaCl 2 to brine to ice. Thus, vapor nearby continuously diffuses to and deposits at the site, resulting in a lasting dry region around without water condensation. The frost growing on the pattern is also fluffy and can be easily removed by gravity and/or wind. This work has promising applications in areas where it is extremely difficult to use active deicing methods.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%