Abstract
An original and low cost method for the fabrication of patterned surfaces bioinspired from butterfly wings and lotus leaves is presented. Silica-based sol–gel films are thermally imprinted from elastomeric molds to produce stable structures with superhydrophobicity values as high as 160° water contact angle. The biomimetic surfaces are demonstrated to be tuned from superhydrophobic to superhydrophilic by annealing between 200 °C and 500 °C.
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