Reduction of ice adhesion on nanostructured and nanoscale slippery surfaces

Haworth, Luke; Yang, Deyu; Agrawal, Prashant; Torun, Hamdi; Hou, Xianghui; McHale, Glen; Fu, Yong Qing

doi:10.1063/10.0017254

Cited by 4 publications

(3 citation statements)

References 20 publications

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“…The images show no significant changes in the structure of the surface. It is worth noting that the roughness of the coatings was measured to be 0.07 μm in previous studies using the same type of coating …”

Section: Experimental Methodsmentioning

confidence: 97%

“…It is worth noting that the roughness of the coatings was measured to be 0.07 μm in previous studies using the same type of coating. 31 The contact angles of all of the solutions on the superhydrophobic surface were characterized using a drop shape analyzer (Kruss DSA 30). Measurements of advancing and receding contact angles and contact angle hysteresis, Δθ (i.e., the difference between advancing and receding contact angles), were performed using droplets of different solutions with a fixed volume of 3.6 μL.…”

Section: ■ Experimental Methodsmentioning

confidence: 99%

“…It is worth noting that the roughness of the coatings was measured to be 0.07 μm in previous studies using the same type of coating. 31 …”

Section: Experimental Methodsmentioning

confidence: 99%

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Impact Dynamics of Non-Newtonian Droplets on Superhydrophobic Surfaces

et al. 2023

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Droplet impact behavior on a solid surface is critical for many industrial applications such as spray coating, food production, printing, and agriculture. For all of these applications, a common challenge is to modify and control the impact regime and contact time of the droplets. This challenge becomes more critical for non-Newtonian liquids with complex rheology. In this research, we explored the impact dynamics of non-Newtonian liquids (by adding different concentrations of Xanthan into water) on superhydrophobic surfaces. Our experimental results show that by increasing the Xanthan concentration in water, the shapes of the bouncing droplet are dramatically altered, e.g., its shape at the separation moment is changed from a conventional vertical jetting into a "mushroom"-like one. As a result, the contact time of the non-Newtonian droplet could be reduced by up to ∼50%. We compare the impact scenarios of Xanthan liquids with those of glycerol solutions having a similar apparent viscosity, and results show that the differences in the elongation viscosity induce different impact dynamics of the droplets. Finally, we show that by increasing the Weber number for all of the liquids, the contact time is reduced, and the maximum spreading radius is increased.

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Section: Experimental Methodsmentioning

confidence: 97%

Section: ■ Experimental Methodsmentioning

confidence: 99%