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Image: Konrad Rykaczewski (ASU) & Sushant Anand (MIT)
Water vapor condensation on microtextured surface saturated with low viscosity (10 cSt) silicone oil resulted in formation of a micro-droplet. The visualization shows the presence of a thin nano-film of silicone oil uniformly coating the water droplet. Within the oil nanofilm, we observe two separate nanoscale droplets near the top of the droplet.