Macroscopically Flat and Smooth Superhydrophobic Surfaces: Heating Induced Wetting Transitions up to the Leidenfrost Temperature
We present an investigation of the change in wettability of water droplets on 3 different flat, smooth substrates with an elevation in temperature. Two methods were employed. In the first method the droplet was placed on the substrate before it was heated and in the second method the droplets were induced to fall onto a preheated substrate. We find that the intrinsic wettability of the surface is important and that fundamentally different behavior is observed on a hydrophobic surface relative...[Show more]
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