The relationship between superhydrophobic surface topography and ice adhesion

Y. Wang
University of Massachusetts Lowell,
United States

Keywords: ice adhesion, superhydrophobic, topography, roughness, ice formation

Summary:

Ice formation on solid surfaces at subzero temperatures can lead to fatal failure to a wide range of applications. An efficient and cost-effective strategy to reduce ice adhesion is needed. The superhydrophobic surface has been broadly discussed about its potential on ice-shedding surface design. In this study, different epoxy/silica superhydrophobic surfaces were fabricated by spray coating to investigate the relationship between topography and ice adhesion. By applying fluorescence microscopy technique to visualize the actual solid-water interface are and 3D surface profiler data, we found that with the increase of particle content, the higher structure will be created on the surface which led to the decreasing of solid-water interface fraction and therefore reduced the ice adhesion accordingly. Moreover, the strong relationship between ice adhesion and work of adhesion scaling parameter suggested that water receding angle can be considered as a reliable factor to predict the ice adhesion performance of a rough surface.