Synthesis of Cu and Ni chalcogenides and evaluation of their properties for electromagnetic wave absorption

Abstract

Cu and Ni chalcogenides were synthesized by hydrothermal methods and characterized by XRD and SEM.

Preparation and evaluation of the microwave absorption properties of template-free graphene foam-supported Ni nanoparticles

“…49,50 Therefore, the magnetic loss of GFN arises from both eddy current effects and natural resonance. According to the transmission line theory, the RL of these specimens can be calculated by the following formulae: 51,52…”

Conversion of single crystals of a nickel(II) dithiocarbamate complex to nickel sulfide crystals

“…Techniques utilizing separate reactants have been applied to the synthesis of NixSy compounds, with varying degrees of success. Synthetic methods include solvo-and hydrothermal, [20,[41][42][43][44][45][46] solidstate, [47][48][49] microwave-assisted, [11,17] spray pyrolysis [50,51] and solution-based [52] techniques. In these cases, the phase and morphology of the resultant NixSy material is adjusted by varying the solvent, capping ligand, precursors, reaction temperature and time.…”

Enhanced Electromagnetic Absorption Properties of Novel 3D-CF/PyC Modified by Reticulated SiC Coating

“…Hence, the 3D-CF/PyC/SiC-wax composites possess a lower α, especially in the red regions where the minimum reflection loss is gained. It indicates that although both Z r and α affect the ability of the electromagnetic wave absorption, the former plays a dominant role as the strong attenuation loss ability is of little significance for little incident electromagnetic waves. , For the possible wave absorption mechanism of the 3D-CF/PyC/SiC composites, a schematic diagram is proposed in Figure c. When the wave and the axial are incident at a certain angle, the SiC coating guarantees the ratio of the incident waves, which means that most of the microwaves are captured by the 3D-CF/PyC/SiC composite.…”