Microwave absorption property of GO–Fe/FeO–NiO HNFs: GO decorated Fe/FeO–NiO hexagonal flakes with a 2D/0D/2D structure

Abstract

In this study, Fe/FeO-NiO HNFs in which, 2D NiO hexagonal nanoflakes (Fe/FeO-NiO HNFs) were decorated by 0D Fe/FeO NPs were prepared by facile hydrothermal method. Then, 0D/2D Fe/FeO-NiO HNFs were...

GO-decorated chain-like Fe2O3/FeMn2O4 NPs (GO-Fe2O3/FeMn2O4 nanocomposites) with ultrabroad band microwave absorption

“…The RL min reached À20 dB at 10 GHz and for the rest of the band, it was about À12.5 dB. For thicknesses of 2.4 and 3.6 mm, the RL min was below À10 dB (9.8-18 GHz) and (11)(12)(13)(14)(15)(16)(17)(18), respectively. The RL min varied from À13 to À20 dB and the tail of the RL curves changed from À10 to À12.5 dB.…”

“…The trend of reflection loss of S3 is similar to that of S2 (RL was almost constant with a weak peak at the beginning of frequency), with a significant decrement in both reflection loss and bandwidth. Only for the 2.4 mm thick sample was the RL greater than À10 dB for the entire frequency band (8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18). The RL min reached À20 dB at 10 GHz and for the rest of the band, it was about À12.5 dB.…”

“…Unlike the superior absorption properties of S1 and S2, S3 showed ordinary absorption ability. Only for 2.2 mm of matching thickness did the RL min drop below À10 dB for an entire frequency band (8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18). The RL min varied from À13 dB to À20 dB and the tail of the RL curve changed from À10 to À12.5 dB.…”

“…10 Carbon-based materials have low density; light weight; high mechanical strength, electrical conductivity, and thermal stability; strong dielectric loss; and excellent corrosion resistance. 11,12 Despite these advantages, they show weak absorption performances both in terms of reflection loss and absorption bandwidth. Carbon materials, such as carbon nanotubes, graphene oxide, and reduced graphene oxide, with high specific surface areas tend to capture and stabilize various nanoparticles.…”

Recent Progress in Poly (3,4‐Ethylene Dioxythiophene): Polystyrene Sulfonate Based Composite Materials for Electromagnetic Interference Shielding

“…Porosity and hierarchical structure of PEDOT: PSS based composites with possibility of high multiple internal reflection or internal scattering also would contribute to the absorption mechanism. [187][188][189][190]…”