Scientists have developed a coating, suitable for clothing, that wards off practically any liquid.
Previous such surfaces have been susceptible to certain oils and alcohols with very low surface tension. But researchers from the University of Michigan and the Air Force Research Laboratory at California's Edwards Air Force Base are reporting in the Journal of the American Chemical Society that they have produced a surface that causes even these troublesome liquids to "roll off and bounce." The key is a "hierarchically structured surface," or one with a finer texture—from the chemical coating—atop a coarser underlying microtopography.
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