In this paper, polymer-derived ceramic (PDC) metamaterials doped with magnetic fillers were prepared by vat photopolymerization technology. Through CST simulation technology, the triply periodic minimal surface (TPMS) Gyroid Schoen (GS) structure with complex spiral shell structure was discussed, which makes the incident electromagnetic wave (EMW) produce multiple scattering and dissipate energy. By introducing a magnetic filler nickel acetylacetonate (NA) as a nickel source, Ni and Ni2Si phases were formed in the SiCN ceramic matrix to provide multiple heterogeneous interfaces. The synergistic effect of dielectric loss and magnetic loss enhances the electromagnetic wave absorption performance. A sample pyrolyzed at 1100 °C (SiCN-0.1NA) had the minimum reflection loss (RLmin) of −24.4 dB and achieved the complete absorption of X-band electromagnetic waves. In addition, SiCN-NA ceramics not only have excellent absorbing ability, but also enable electromagnetic-thermal-electric energy conversion, effectively realizing infrared stealth.
Vat photopolymerization 3D printed SiCN (Ni) ceramics possessing complete absorption of electromagnetic waves in the X-band and infrared stealth characteristics
Colombo P.;
2026
Abstract
In this paper, polymer-derived ceramic (PDC) metamaterials doped with magnetic fillers were prepared by vat photopolymerization technology. Through CST simulation technology, the triply periodic minimal surface (TPMS) Gyroid Schoen (GS) structure with complex spiral shell structure was discussed, which makes the incident electromagnetic wave (EMW) produce multiple scattering and dissipate energy. By introducing a magnetic filler nickel acetylacetonate (NA) as a nickel source, Ni and Ni2Si phases were formed in the SiCN ceramic matrix to provide multiple heterogeneous interfaces. The synergistic effect of dielectric loss and magnetic loss enhances the electromagnetic wave absorption performance. A sample pyrolyzed at 1100 °C (SiCN-0.1NA) had the minimum reflection loss (RLmin) of −24.4 dB and achieved the complete absorption of X-band electromagnetic waves. In addition, SiCN-NA ceramics not only have excellent absorbing ability, but also enable electromagnetic-thermal-electric energy conversion, effectively realizing infrared stealth.
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