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Manuscript: Lim, Dahyun Daniel, et al. "Broadband mechanical metamaterial absorber enabled by fused filament fabrication 3D printing." Additive Manufacturing 55 (2022): 102856.'
Broadband mechanical metamaterial absorber (BMMA) is designed in lattice structures.
It implements both electromagnetic wave absorption and reinforced relative stiffness.
BMMAs consist of multi-layered, octet-truss cells of carbon black-based composites.
3D printed BMMAs achieve > 90% absorbance (~98.66% on average) for 5.8–18 GHz.
It maintains constant stiffness per unit mass density of 1.37 at a low density (~200 kg/m3).
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