fig4

Figure 4. (A) SEM image of nanofibrous microspheres and microwave absorption performance of their paraffin wax composite^[99]. Copyright 2024, Elsevier; (B) Permittivity, impedance matching characteristics, and reflection loss of RGO@carbon mesoscale metacomposites across a broad temperature range^[79]. Copyright 2022, Springer Nature; (C) Electromagnetic wave absorption performance of GNs/PES composites over a broad temperature range^[100]. Copyright 2024, Elsevier; (D) Variation in dielectric properties and absorption bandwidth of RGO microsphere-based mesoscopic metacomposites^[96]. Copyright 2025, Elsevier. SEM: Scanning electron microscopy; RGO@carbon: reduced graphene oxide@carbon spheres.