Fig. 8

a Relationship between conductivity and deposited Cu content. b EMI SE of PAM, PAM13-Cu0.5, PAM13-Cu1.0, PAM13-Cu1.5 and PAM13-Cu2.0 foam. c Average SEA, SER and SET of PAM13-Cu2.0 foam. d Average R, A and T coefficients of PAM, PAM13-Cu0.5, PAM13-Cu1.0, PAM13-Cu1.5 and PAM13-Cu2.0 foam. e Test model for PAM13-Cu foam in vector network analyzer. f EMI SE, g average SEA, SER and SET and h average R, A and T coefficients of under different test models. i EMI shielding mechanism of PAM13-Cu foam