Abstract
The self-cleaning property of the lotus plant, named the ‘Lotus Effect’, is based on the specific properties of micro- and nanostructured ultrahydrophobic surfaces, which are always completely cleaned by rainfall: the contact area of water and dirt particles is largely minimized by the double structured surface. Methods to test superhydrophobicity and self-cleaning, which differentiate between conventional soil-repellent finished textile samples and textiles that are finished with products that impose nano-dimensional structures on the fibre surface, are described. The effect of the nanostructure on the ‘Lotus Effect’ is investigated and applications, including architectural textiles, and future trends are outlined.
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