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4 October 2024 Biomimetic solution-based thin films for functional applications
Alessandro Martucci, Elena Colusso, Giovanni Perotto
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Proceedings Volume PC13116, Nanoengineering: Fabrication, Properties, Optics, Thin Films, and Devices XXI; PC1311606 (2024) https://doi.org/10.1117/12.3028203
Event: Nanoscience + Engineering, 2024, San Diego, California, United States
Abstract
Nature is a great source of inspiration for scientists and engineers to design and fabricate functional devices. Many animals and plants present a structural coloration, which is caused by the interaction of light with periodic structure, usually used in camouflage or to transmit information. Several natural surfaces show superwettability properties that allow self-cleaning abilities and water harvesting. Here, we show two examples of biomimetic coatings inspired by the cuticle of the Hoplia cerulea beetle and Stenocara beetle. The coatings were fabricated by using a simple and scalable approach based on layer-by-layer deposition of sol-gel solutions by spin coating. We developed a multilayer film with structural color by alternating a low refractive index material (silk fibroin) with a high refractive index layer (titania nanosheets). Inspired to the back of Namib desert beetle, we fabricated micropatterned surfaces through a controlled dewetting of bilayer films.
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Alessandro Martucci, Elena Colusso, and Giovanni Perotto "Biomimetic solution-based thin films for functional applications", Proc. SPIE PC13116, Nanoengineering: Fabrication, Properties, Optics, Thin Films, and Devices XXI, PC1311606 (4 October 2024); https://doi.org/10.1117/12.3028203
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KEYWORDS
Biomimetics
Thin films
Humidity
Refractive index
Sol gels
Water
Natural surfaces
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