# Two recipes for repelling hot water Source: [Two recipes for repelling hot water]() Collection index: [llms.txt]() Data updated: 2025-10-24T23:31:08.520Z Authors: Timoth\\'ee Mouterde, Pierre Lecointre, Ga\\"elle Lehoucq, Antonio Checco, Christophe Clanet, David Qu\\'er\\'e Published: 2018-10-16T08:47:45.000Z ## Abstract Although a hydrophobic microtexture at a solid surface most often reflects rain owing to the presence of entrapped air within the texture, it is much more challenging to repel hot water. As it contacts a colder material, hot water generates condensation within the cavities at the solid surface, which eventually builds bridges between the substrate and the water, and thus destroys repellency. Here we show that both "small" (~100 nm) and "large" (~10 \\mu m) model features do reflect hot drops at any drop temperature and in the whole range of explored impact velocities. Hence, we can define two structural recipes for repelling hot water: drops on nanometric features hardly stick owing to the miniaturization of water bridges, whereas kinetics of condensation in large features is too slow to connect the liquid to the solid at impact. ## Recorded benchmark results A research result applies to its stated dataset, split, metric and evaluation configuration. Compare like-for-like settings, preserve the metric's unit and direction, and distinguish paper-reported results from independent reproduction. The best result recorded here is not a claim of exhaustive, current global coverage. ## Original sources and implementation [Original paper]() [PDF]()