MULTIPLE FUNCTION MICROSTRUCTURE WITH LOTUS AND LIGHT TRAPPING EFFECTS
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United States of America Patent
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Jun 27, 2016
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Jun 27, 2016
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Abstract
A multiple function microstructure with lotus and light trapping effects includes plural triangular walls with same and different heights and having a triangular cross section and arranged apart or staggered with one another, and a surface layer, a middle layer having zero to plural layers, and a bottom layer. The bottom layer and one of the other layers constitute a closed space to form an air spring, so that droplets can be bounced and separated from the surface of the microstructure. Each triangular wall has a cross section substantially in a smooth upwardly convex curve to prevent droplets from cracking while dropping. The microstructure selectively made of a hydrophobic material provides lotus and light trapping effects, and the microstructure selectively made of an oleophobic material provides a superoleophobic effect, and the surface of the microstructure may be coated with various type of chemical materials for different applications.
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