When droplets of water containing metal particles are deposited on a hot surface, they are supported by a thin layer of vapour that lets them slide, essentially friction free. The metal trails the droplets leave in their wake could be useful for making nanowires.
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Bain, C. Drip painting on a hot canvas. Nature Nanotech 2, 344–345 (2007). https://doi.org/10.1038/nnano.2007.160
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DOI: https://doi.org/10.1038/nnano.2007.160
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