Microstructure design is an effective strategy to realize the multifunctional integration as well as broaden the practical engineering application fields of microwave absorbing materials. Herein, a novel Co1.29Ni1.71O4/reduced graphene oxide/calcined...
A four-layer absorbing composite on millimeter scale is designed containing an absorbent with multilayer-like structure on the microscale. In this four-layer absorbing composite, epoxy resin acts as transparent layer, the multilayer-like structure absorbent serves as the main absorbing layer; graphene/Ni composite acts as an impedance matching layer; and Fe 3 O 4 nanoparticles serve as a magnetic-loss absorbing layer. The reflection loss of the composites is simulated with CST Microwave Studio, and the absorbency of the composites is discussed in detail when the thickness of each layer is changed. The results show that when the thicknesses of the transparent layer, main absorbing layer, impedance matching layer, and magnetic-loss absorbing layer are 2.5, 2, 1.5, and 2 mm, respectively, the minimum reflection loss of the composite is −51.7 dB, the bandwidth below −10 dB reaches 11.82 GHz, and the density of the composite is nearly 1.9 g cm −3 . Therefore, this new four-layer absorbing composite possesses strong absorbency, broad absorbing bandwidth, thin thickness, and light weight. Thus, a new way to the development of multilayer absorbing composites is presented.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.