Core@shell structured flower-like Co0.6Fe2.4O4@MoS2 nanocomposites: a strong absorption and broadband electromagnetic wave absorber

2019 ◽  
Vol 7 (29) ◽  
pp. 8975-8981 ◽  
Author(s):  
Lin Long ◽  
Erqi Yang ◽  
Xiaosi Qi ◽  
Ren Xie ◽  
Zhongchen Bai ◽  
...  
Keyword(s):  
Electromagnetic Wave ◽  
Microwave Absorption ◽  
Strong Absorption ◽  
Core Shell ◽  
Broad Absorption ◽  
Absorption Bandwidth

Core@shell structured flower-like Co0.6Fe2.4O4@MoS2 nanocomposites and the main possible pathways of microwave absorption, strong absorption ability and broad absorption bandwidth.

Magnetite hollow microspheres with a broad absorption bandwidth of 11.9 GHz: toward promising lightweight electromagnetic microwave absorption

2017 ◽  
Vol 19 (30) ◽  
pp. 19975-19983 ◽  
Author(s):  
Ivan Shanenkov ◽  
Alexander Sivkov ◽  
Alexander Ivashutenko ◽  
Viktor Zhuravlev ◽  
Qing Guo ◽  
...  
Keyword(s):  
Electromagnetic Wave ◽  
Microwave Absorption ◽  
Dynamic Method ◽  
Hollow Microspheres ◽  
Broad Absorption ◽  
Plasma Dynamic ◽  
Absorption Bandwidth ◽  
Electromagnetic Wave Absorption ◽  
Wave Absorption

The ferritic hollow microspheres with excellent electromagnetic wave absorption performances were successfully prepared by a fast, simple and scalable plasma dynamic method.

Janus-like Fe3O4/PDA vesicles with broadening microwave absorption bandwidth

2018 ◽  
Vol 6 (29) ◽  
pp. 7790-7796 ◽  
Author(s):  
Xiaofeng Shi ◽  
Zhengwang Liu ◽  
Wenbin You ◽  
Xuebing Zhao ◽  
Renchao Che
Keyword(s):  
Microwave Absorption ◽  
Coupling Effect ◽  
Magnetic Coupling ◽  
Strong Absorption ◽  
Frequency Range ◽  
Absorption Intensity ◽  
Absorption Bandwidth ◽  
Measured Frequency ◽  
Measured Frequency Range ◽  
Pda Vesicles

Fe3O4/PDA vesicle Janus nanospheres were successfully synthesized, and they exhibited an ultra-wide effective band as wide as 11.6 GHz, covering 73% of the whole measured frequency range (2–18 GHz), and a strong absorption intensity as high as −50.0 dB due to the asymmetric polarization and magnetic coupling effect.

Preparation and Electromagnetic Wave Absorption Properties of Core-Shell Ni/TiO2 Microspheres

2014 ◽  
Vol 602-603 ◽  
pp. 762-766
Author(s):  
Biao Zhao ◽  
Bing Bing Fan ◽  
Hao Chen ◽  
Xiao Xuan Pian ◽  
Bin Bin Wang ◽  
...  
Keyword(s):  
Electromagnetic Wave ◽  
Microwave Absorption ◽  
Magnetic Loss ◽  
Core Shell ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Electromagnetic Wave Absorption ◽  
X Ray ◽  
Wave Absorption ◽  
Chloride Hexahydrate

The composite microspheres with Ni cores and amorphous TiO2 shells (Ni@TiO2) were synthesized by a one-pot solvothermal method at 180°C for 15 h, which used nickel chloride hexahydrate as Ni source andtetrabutyl orthotitanate as Ti source. The Ni/TiO2 core/shell composites were characterized using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), energy dispersive X-ray (EDX). A possible formation mechanism of core-shell Ni/TiO2 was proposed. Furthermore, the microwave absorption properties of these microspheres were investigated in terms of complex permittivity and permeability. The minimum reflection loss is-29.5 dB at 14.4 GHz for a layer of 4.0 mm thickness. Such phenomenon is attributed to the synergy effect between magnetic loss of Ni core and dielectric loss of amorphous TiO2 shell. The enhanced microwave absorption properties are also believed to be due to the unique coreshell structure. All results indicate that these Ni@TiO2 microspheres may be attractive candidate materials for electromagnetic wave absorption applications.

Uniform Fe3O4 coating on flower-like ZnO nanostructures by atomic layer deposition for electromagnetic wave absorption

2015 ◽  
Vol 44 (43) ◽  
pp. 18804-18809 ◽  
Author(s):  
Gengping Wan ◽  
Guizhen Wang ◽  
Xianqin Huang ◽  
Haonan Zhao ◽  
Xinyue Li ◽  
...  
Keyword(s):  
Electromagnetic Wave ◽  
Atomic Layer Deposition ◽  
Microwave Absorption ◽  
Shell Structure ◽  
Atomic Layer ◽  
Core Shell ◽  
Zno Nanostructures ◽  
Electromagnetic Wave Absorption ◽  
Layer Deposition ◽  
Core Shell Structure

A uniform ZnO@Fe3O4 core–shell structure is prepared by an ALD method, which shows great potential for microwave absorption materials.

Preparation and electromagnetic wave absorption properties of novel dendrite-like NiCu alloy composite

RSC Advances ◽  
2015 ◽  
Vol 5 (53) ◽  
pp. 42587-42590 ◽  
Author(s):  
Biao Zhao ◽  
Gang Shao ◽  
Bingbing Fan ◽  
Wanyu Zhao ◽  
Rui Zhang
Keyword(s):  
Electromagnetic Wave ◽  
Microwave Absorption ◽  
Wide Band ◽  
Strong Absorption ◽  
Alloy Composite ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Electromagnetic Wave Absorption ◽  
Wave Absorption ◽  
Nicu Alloys

The dendrite-like NiCu alloys show outstanding microwave absorption properties with the features of thin-thickness, strong absorption and wide-band.

scholarly journals Facile design of a ZnO nanorod–Ni core–shell composite with dual peaks to tune its microwave absorption properties

RSC Advances ◽  
2017 ◽  
Vol 7 (15) ◽  
pp. 9294-9302 ◽  
Author(s):  
Jiushuai Deng ◽  
Qibiao Wang ◽  
Yuanyuan Zhou ◽  
Biao Zhao ◽  
Rui Zhang
Keyword(s):  
Microwave Absorption ◽  
Core Shell ◽  
Zno Nanorod ◽  
Absorption Bands ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Absorption Bandwidth ◽  
Effective Absorption ◽  
Shell Composite

The Ni/ZnO composites show two wide attractive absorption bands, which could broaden the effective absorption bandwidth.

Core–Shell Structural Barium Ferrite/Polypyrrole Nanocomposites with Enhanced Microwave Absorption Properties

2020 ◽  
Vol 15 (11) ◽  
pp. 1312-1320
Author(s):  
Kai Sun ◽  
Gang Li ◽  
Yan-Hua Lei ◽  
Xin-Feng Wu ◽  
Wei-Guo Zhang ◽  
...  
Keyword(s):  
Electromagnetic Wave ◽  
Microwave Absorption ◽  
Barium Ferrite ◽  
Wave Attenuation ◽  
Magnetic Loss ◽  
Impedance Matching ◽  
Oxidative Polymerization ◽  
Electromagnetic Properties ◽  
Core Shell ◽  
Absorption Performance

In this paper, core–shell structural barium ferrite/polypyrrole (BF/PPy) nanocomposites were prepared by a facile in-situ chemical oxidative polymerization method, and their electromagnetic properties were systematically studied. It was demonstrated that the nanocomposites with 15 mol% BF possessed the best electromagnetic wave absorption performance, and a reflection loss of -57.13 dB was achieved at 3.98 mm. Further study revealed that the optimized impedance matching and large attenuation constant were conducive to a good absorption performance. Meanwhile, the combined action of dielectric loss and magnetic loss was responsible for the electromagnetic wave attenuation. This study provides a supplementary approach to microwave absorption materials with a desirable absorption performance.

Compositional and morphological design of hierarchical Co2Y@MnO2@CNTs core-shell microflowers for broadband microwave absorption application

2021 ◽  
Vol 869 ◽  
pp. 159270
Author(s):  
Li He ◽  
Xun Li ◽  
Ruochen Dai ◽  
ZuTing Zhong ◽  
Yuchen Zhao ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Core Shell
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