Biomimetic Surface Coatings for Atmospheric Water Capture Prepared by Dewetting of Polymer Films



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The synthesis of biomimetic, micro­patterned surface coatings with topographical and chemical features to capture water from a humid atmosphere is demonstrated. The coatings are prepared by dewetting thin polymer films to create materials consisting of raised hydrophilic bumps on a hydrophobic background. An enhanced rate of water condensation is measured on these surfaces under representative climatic conditions.