Fig. 4

EMI shielding performance: VNA experimental results, simulation and field scanning. a SMI SE_Total versus thickness of AgNF film with a density of 0.2 g cm⁻³ and other EMI shielding films from references. b Specific EMI SE of AgNF and other EMI shielding materials from references. c EMI SE_Total of AgNF and other common materials from 8 to 12 GHz. d, e EMI SE_R and EMI SE_A (|S₂₁| and |S₁₁|) versus frequency (from 8 to 12 GHz) of AgNF with different thicknesses. Time domain simulation based on a metallic-silver-network approximate model include f, g EMI SE_Total and EMI SE_A (|S₂₁| and |S₁₁|) versus frequency (from 8 to 12 GHz) of AgNF with different thicknesses. Field scanning of a point source h without and i with an annular AgNF sheet at the emission frequency of 10 GHz. Field simulation of a point source j without and k with a copper sheet at the emission frequency of 10 GHz