Computation and modeling of microwave absorbing CuO/graphene nanocomposites

In this study, the microwave absorption properties of single‐ and double‐layer composites were investigated for experimental and numerical solution in the 8.2 to 12.4 GHz for different thickness ( t m ) of composites. Herein, the single‐layer composites (R1: CuO and R2: CuO‐containing graphene nanoparticle [GNP]) and double‐layer composites that composed of R1 and R2 layers were fabricated. The first double‐layer composite labeled as D1 contains R1 as a matching layer and R2 as an absorbing layer and the second double‐layer composite labeled as D2 contains R2 as a matching layer and R1 as an absorbing layer. D1 and D2 produced composites were also designed numerically and denoted as M1 and M2, respectively. The measured and simulated reflection loss ( R L ) of double‐layer composites shows similar performance, and it was observed that the microwave absorbers obtained with experimental studies can be modeled using computer design. The M2 double‐layer design based on 5 mm of the matching layer and 2 mm of the absorbing layer shows a minimum R L value of −33.7 dB at 10.06 GHz and an absorption bandwidth of about 1.13 GHz below −10 dB compared to single‐layer composites.