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Published on: April 4, 2017
Solution-Processable Photonic Inks of Mie-Resonant Hollow Carbon-Silica Nanospheres
Seung-Hyun Kim1,2, Victoria Hwang3, Sang Goo Lee2
1School of Chemical Engineering, Sungkyunkwan University, Suwon, 16419, Republic of Korea.
Abstract:
Hollow carbon-silica nanospheres that exhibit angle-independent structural color with high saturation and minimal absorption are made. Through scattering calculations, it is shown that the structural color arises from Mie resonances that are tuned precisely by varying the thickness of the shells. Since the color does not depend on the spatial arrangement of the particles, the coloration is angle independent and vibrant in powders and liquid suspensions. These properties make hollow carbon-silica nanospheres ideal for applications, and their potential in making flexible, angle-independent films and 3D printed films is explored.
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