Abstract
HighlightsA facile and generalized design strategy of polymer precursor inks was developed for direct ink writing of metal oxide into submicron 3D architectures.The Maillard reaction between polyethyleneimine and glucose endows the 3D-printed precursors with the excellent shape fidelity during high-temperature pyrolysis.As-printed 3D periodic dielectric structure with woodpile geometry shows a significant light-matter effect in mid-infrared region.
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