Continuous resin refilling and hydrogen bond synergistically assisted 3D structural color printing

Yu Zhang, Lidian Zhang, Chengqi Zhang, Jingxia Wang, Junchao Liu, Changqing Ye, Zhichao Dong, Lei Wu () and Yanlin Song ()
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Yu Zhang: Chinese Academy of Sciences
Lidian Zhang: Chinese Academy of Sciences
Chengqi Zhang: Beihang University
Jingxia Wang: University of Chinese Academy of Sciences
Junchao Liu: Chinese Academy of Sciences
Changqing Ye: Suzhou University of Science and Technology
Zhichao Dong: University of Chinese Academy of Sciences
Lei Wu: Chinese Academy of Sciences
Yanlin Song: Chinese Academy of Sciences

Nature Communications, 2022, vol. 13, issue 1, 1-11

Abstract: Abstract 3D photonic crystals (PCs) have attracted extensive attention due to their unique optical properties. However, fabricating 3D PCs structure by 3D printing colloidal particles is limited by control of assembly under a fast-printing speed. Here, we employ continuous digital light processing (DLP) 3D printing strategy with hydrogen bonds assisted colloidal inks for fabricating well-assembled 3D PCs structures. Stable dispersion of colloidal particles inside UV-curable system induced by hydrogen bonding and suction force induced by continuous curing manner cooperatively realize the simultaneous macroscopic printing and microscopic particle assembly, which endows volumetric color property. Structural color can be well regulated by controlling the particle diameter and printing speed, through which various complex 3D structures with desired structural color distribution and optical light-guide properties are acquired. This 3D color construction approach shows great potential in customized jewelry accessories, decoration and optical device preparation, and will innovate the development of structural color.

Date: 2022
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DOI: 10.1038/s41467-022-34866-6

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