Surface Acoustic Waves Equip Materials with Active Deicing Functionality: Unraveled Deicing Mechanisms and Application to Centimeter Scale Transparent Surfaces

Jacob, Stefan; Pandey, Shilpi; Moral, Jaime Del; Karimzadeh, A.; Gil-Rostra, Jorge; González‐Elipe, Agustín R.; Borrás, Ana; Winkler, Andreas

doi:10.48550/arxiv.2210.09113

Cited by 1 publication

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“…Active anti-icing methods require the input of an external thermal (hot air circulation, electrical resistance heating) or mechanical (surface acoustic waves, moving systems) energy sources [12][13][14] or the use of liquid anti-icing methods. Combinations of these types of solutions have also been reported [15,16].…”

Section: Introductionmentioning

confidence: 99%

Use of Green Fs Lasers to Generate a Superhydrophobic Behavior in the Surface of Wind Turbine Blades

et al. 2022

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Ice generation on the surface of wind generator blades can affect the performance of the generator in several aspects. It can deteriorate sensor performance, reduce efficiency, and cause mechanical failures. One of the alternatives to minimize these effects is to include passive solutions based on the modification of the blade surfaces, and in particular to generate superhydrophobic behavior. Ultra-short laser systems enable improved micromachining of polymer surfaces by reducing the heat affected zone (HAZ) and improving the quality of the final surface topography. In this study, a green fs laser is used to micromachine different patterns on the surface of materials with the same structure that can be found in turbine blades. Convenient optimization of surface topography via fs laser micromachining enables the transformation of an initially hydrophilic surface into a superhydrophobic one. Thus, an initial surface finish with a contact angle ca. 69° is transformed via laser treatment into one with contact angle values above 170°. In addition, it is observed that the performance of the surface is maintained or even improved with time. These results open the possibility of using lasers to control turbine blade surface microstructure while avoiding the use of additional chemical coatings. This can be used as a complementary passive treatment to avoid ice formation in these large structures.

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