Table 2

Comparison of microwave absorption properties between paper-based metamaterials and conventional microwave absorption materials.

Materials systems Preparation method Operating frequency (GHz) Absorption bandwidth (GHz) Reference
Paper-based metamaterial Pencil-drawing 2.52–40 37.48 [103]
Paper-based metamaterial Pencil-drawing 1.9–5.8 3.9 [77]
Co/C nanocomposites Carbonization 13.4–17.6 4.3 [104]
Fe3C/C nanofibers Electrospinning 13.3–17.8 4.5 [105]
N-doped CNFs Electrospinning 12.6–17.5 4.9 [106]
Fe/C nanofibers Electrospinning 10.8–13.8 3.0 [107]

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