Facile Construction of VS2@GNSs Composites with 1D/2D Hierarchical Structures for Efficient Electromagnetic Wave Absorption

• • The VS2@GNSs composite achieves a minimal reflection loss (RLmin) of -49.83 dB at 1.83 mm, indicating that over 99.99% of incident EMW energy is absorbed, which is critical for stealth applications requiring high attenuation. • • An ultra-broad effective absorption bandwidth (EAB) of 6.72 GHz is attained at a matching thickness of 1.96 mm, covering a significant portion of the C and Ku bands, enabling wideband radar absorption in practical scenarios. • • CST full-wave simulation demonstrates a radar cross-section (RCS) reduction of up to 20.38 dB m2 compared to a metallic substrate, signifying a substantial decrease in detectability, which is vital for military stealth technology. • • The facile ball milling method offers a scalable and cost-effective route for constructing 1D/2D hierarchical composites, addressing the bottleneck of complex synthesis procedures in existing EMW absorbers.