Fig. 1.

Synthesis route of the UV-curable polysiloxane and schematic DLP printing process and preparation of the designed Si–O–C ceramic metamaterial: a synthesis route of UV–PSO; b 3D printing of UV–PSO and pyrolysis process of Si–O–C ceramic metamaterial; and c photograph of a representative booster blade DLP-printed green body and two kinds cross-linked molecular structure of the UV–PSO