Enhanced Electromagnetic Wave Absorbing Material CoO/MWCNTs Prepared by Pyrolysis of Zeolitic Imidazolate Framework

2021 ◽  
Vol 95 (S2) ◽  
pp. S352-S358
Author(s):  
Ying Meng ◽  
Shibin Lu ◽  
Yaodong Wu ◽  
Miao Sun ◽  
Haisheng Lu ◽  
...  
Keyword(s):  
Electromagnetic Wave ◽  
Zeolitic Imidazolate Framework ◽  
Absorbing Material

scholarly journals A versatile strategy for alternately arranging the foam ratio layers of multilayer graphene/thermoplastic polyurethane composite foams towards lightweight and broadband electromagnetic wave absorption

RSC Advances ◽  
2019 ◽  
Vol 9 (41) ◽  
pp. 23843-23855 ◽  
Author(s):  
Chaozhi Wang ◽  
Jiang Li ◽  
Shaoyun Guo
Keyword(s):  
Electromagnetic Wave ◽  
Thermoplastic Polyurethane ◽  
Impedance Matching ◽  
Multilayer Graphene ◽  
Absorption Bandwidth ◽  
Electromagnetic Wave Absorption ◽  
Polyurethane Composite ◽  
Composite Foams ◽  
Absorbing Material ◽  
Minimum Reflection Loss

A broadband electromagnetic wave (EW) absorbing material should possess both wider effective absorption bandwidth and lower minimum reflection loss, depending on good impedance matching between the absorber and air and strong attenuation of EW.

Ultra-thin broccoli-like SCFs@TiO2 one-dimensional electromagnetic wave absorbing material

2019 ◽  
Vol 178 ◽  
pp. 107507 ◽  
Author(s):  
Hongsheng Liang ◽  
Jiaolong Liu ◽  
Yi Zhang ◽  
Lei Luo ◽  
Hongjing Wu
Keyword(s):  
Electromagnetic Wave ◽  
One Dimensional ◽  
Absorbing Material

Radar Absorbing Materials Based on Metamaterials

2010 ◽  
Vol 75 ◽  
pp. 215-223
Author(s):  
Andrey Nikolayevich Lagarkov ◽  
Vladimir Nikolayevich Kisel ◽  
Vladimir Nikolayevich Semenenko
Keyword(s):  
Electromagnetic Wave ◽  
Reflection Coefficient ◽  
Frequency Band ◽  
Radar Absorbing Material ◽  
Wide Range ◽  
Absorbing Materials ◽  
Different Types ◽  
Absorbing Material ◽  
Wave Incidence

The use of metamaterial for design of radar absorbing material (RAM) is discussed. The typical features of the frequency dependencies of , , ,  of composites manufactured of different types of resonant inclusions are given as an example. The RAM characteristics obtained by the use of the composites are given. It is shown that it is possible to use for RAM design the metamaterials with both the positive values of ,  and negative ones. Making use of the frequency band with negative  and  it is possible to create a RAM with low reflection coefficient in a wide range of the angles of electromagnetic wave incidence.

An electromagnetic wave absorbing material with potential application prospects—WS2 nanosheets

2019 ◽  
Vol 200 (1) ◽  
pp. 108-116
Author(s):  
Deqing Zhang ◽  
Tingting Liu ◽  
Shuang Liang ◽  
Jixing Chai ◽  
Xiuying Yang ◽  
...  
Keyword(s):  
Electromagnetic Wave ◽  
Potential Application ◽  
Absorbing Material ◽  
Ws2 Nanosheets ◽  
Application Prospects

Facial Synthesis of Zn-Doped Fe3O4 with Enhanced Electromagnetic Wave Absorption Performance in S and C Bands

NANO ◽  
2016 ◽  
Vol 11 (08) ◽  
pp. 1650091 ◽  
Author(s):  
Zhenfeng Liu ◽  
Honglong Xing ◽  
Lei Wang ◽  
Dexin Tan ◽  
Ying Gan ◽  
...  
Keyword(s):  
Electromagnetic Wave ◽  
Doping Concentration ◽  
Magnetic Loss ◽  
Sodium Dodecyl ◽  
Peak Frequency ◽  
Quarter Wave ◽  
Absorbing Material ◽  
Absorption Performance ◽  
Absorbing Property ◽  
Coating Layer Thickness

In this study, Zn-doped Fe3O4 nanoparticles were successfully synthesized by a facile solvothermal method in the presence of sodium dodecyl sulfate (SDS). The morphology, magnetic properties and electromagnetic wave absorbing properties of these materials were characterized. Results showed that Zn[Formula: see text] played a significant role in the formation of Zn-doped Fe3O4. With the protection of SDS, highly dispersed Fe3O4 nanoparticles were obtained. The nanoparticle size decreased after Zn[Formula: see text] doping, and the dispersity deteriorated with increasing Zn[Formula: see text] doping concentration. Zn-doped Fe3O4 exhibited excellent electromagnetic wave absorbing property, which resulted in magnetic loss and dielectric loss at an appropriate doping concentration. The minimum reflection loss (RL) was approximately [Formula: see text][Formula: see text]dB at 16.9[Formula: see text]GHz. As the coating layer thickness increased to 4.0[Formula: see text]mm, the bandwidth was approximately 5.0[Formula: see text]GHz corresponding to RL below [Formula: see text][Formula: see text]dB, which nearly covered the entire S band (2–4[Formula: see text]GHz) and C band (4–8[Formula: see text]GHz). The peak frequency of RL and the number of peaks matched the quarter-wave thickness criteria. It was believed that the Zn-doped Fe3O4 could be a potential electromagnetic wave absorbing material in S and C bands.

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