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AssigneesThe University of Akron, University of California, San Diego
InventorsAli Dhinojwala, Ming Xiao, Ziying Hu, Matthew Shawkey, Nathan Gianneschi
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In various embodiments, the present invention is directed to a facile one-pot reverse emulsion process to assemble core-shell nanoparticles (CS-SMNPs) into bright and noniridescent photonic supraballs. In one or more embodiments, the present invention is directed to core-shell nanoparticles having an inner high refractive index (RI) core and an outer low RI shell. In one or more embodiment, the present invention includes core-shell nanoparticles using high RI (˜1.74) melanin cores and low-RI (˜1.45) silica shells. In various embodiments, these nanoparticles may be self-assembled into bright and noniridescent supraballs using a scalable one-pot reverse emulsion process. According to various embodiments of the present invention, it is possible to generate a full spectrum of structural colors with the combination of only two ingredients, synthetic melanin and silica.
A core-shell nanoparticle capable of self assembly into a supraball for providing structural color comprising an inner high refractive index (RI) core and an outer low RI shell, wherein said inner high refractive index (RI) core comprises natural or synthetic melanin.
Dependencies are inferred from the claim text.