Carbon nanofibers supported by FeCo nanocrystals as difunctional magnetic/dielectric composites with broadband microwave absorption performance

2020 ◽  
Vol 824 ◽  
pp. 153980 ◽  
Author(s):  
Yajing Wang ◽  
Yong Sun ◽  
Yan Zong ◽  
Tongguang Zhu ◽  
Linxue Zhang ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Carbon Nanofibers ◽  
Absorption Performance ◽  
Microwave Absorption Performance ◽  
Magnetic Dielectric

scholarly journals Fish bone-derived interconnected carbon nanofibers for efficient and lightweight microwave absorption

2021 ◽  
Vol 3 (2) ◽  
Author(s):  
Yangyang Gu ◽  
Peng Dai ◽  
Wen Zhang ◽  
Zhanwen Su
Keyword(s):  
Microwave Absorption ◽  
Carbon Nanofibers ◽  
Three Dimensional ◽  
Fish Bone ◽  
Absorption Properties ◽  
Simple Method ◽  
Microwave Absorption Properties ◽  
Absorption Performance ◽  
Microwave Absorption Performance ◽  
Better Than

AbstractIn this work, we demonstrated a simple method for preparing three-dimensional interconnected carbon nanofibers (ICNF) derived from fish bone as an efficient and lightweight microwave absorber. The as-obtained ICNF exhibits excellent microwave absorption performance with a maximum reflection loss of –59.2 dB at the filler content of 15 wt%. In addition, the effective absorption bandwidth can reach 4.96 GHz at the thickness of 2 mm. The outstanding microwave absorption properties can be mainly ascribed to its well-defined interconnected nanofibers architecture and the doping of nitrogen atoms, which are also better than most of the reported carbon-based absorbents. This work paves an attractive way for the design and fabrication of highly efficient and lightweight electromagnetic wave absorbers.

Flexible design of gradient multilayer nanofilms coated on carbon nanofibers by atomic layer deposition for enhanced microwave absorption performance

Nano Research ◽  
2017 ◽  
Vol 11 (1) ◽  
pp. 530-541 ◽  
Author(s):  
Shichao Zhao ◽  
Lili Yan ◽  
Xiaodong Tian ◽  
Yequn Liu ◽  
Chaoqiu Chen ◽  
...  
Keyword(s):  
Atomic Layer Deposition ◽  
Microwave Absorption ◽  
Carbon Nanofibers ◽  
Atomic Layer ◽  
Flexible Design ◽  
Layer Deposition ◽  
Absorption Performance ◽  
Microwave Absorption Performance

Efficient microwave traps with markedly enhanced interfacial polarization and impedance matching enabled by dual-shelled, dual-cavity magnetic@dielectric hollow nanospheres

2020 ◽  
Vol 8 (46) ◽  
pp. 16489-16497
Author(s):  
Jiasong Hua ◽  
Wenjun Ma ◽  
Xiaoyun Liu ◽  
Qixin Zhuang ◽  
Zeyang Wu ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Reflection Loss ◽  
Impedance Matching ◽  
Interfacial Polarization ◽  
Hollow Nanospheres ◽  
Absorption Performance ◽  
Microwave Absorption Performance ◽  
Magnetic Dielectric ◽  
Minimum Reflection Loss

Dual-shelled, dual-cavity Fe3O4@TiO2 hollow nanospheres exhibit an outstanding microwave absorption performance with a minimum reflection loss of −60.17 dB.

Excellent microwave absorption performance from matched magnetic-dielectric properties of LSMO@RGO Nanocomposites

2020 ◽  
Vol 31 (19) ◽  
pp. 16661-16670
Author(s):  
Yi Ding ◽  
Ruoyu Xu ◽  
Guosheng Wen ◽  
Yu Han ◽  
Yi Tian ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Microwave Absorption ◽  
Absorption Performance ◽  
Microwave Absorption Performance ◽  
Magnetic Dielectric

scholarly journals Effect of Reaction Time on Microwave Absorption Properties of Fe3O4 Hollow Spheres Synthesized via Ostwald Ripening

Materials ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 2921 ◽  
Author(s):  
Wei Huang ◽  
Yujiang Wang ◽  
Shicheng Wei ◽  
Bo Wang ◽  
Yi Liang ◽  
...  
Keyword(s):  
Reaction Time ◽  
Microwave Absorption ◽  
Ostwald Ripening ◽  
Impedance Matching ◽  
Hollow Spheres ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Magnetic Structures ◽  
Absorption Performance ◽  
Microwave Absorption Performance

Hollow magnetic structures have great potential to be used in the microwave absorbing field. Herein, Fe3O4 hollow spheres with different levels of hollowness were synthesized by the hydrothermal method under Ostwald ripening effect. In addition to their microstructures, the microwave absorption properties of such spheres were investigated. The results show that the grain size and hollowness of Fe3O4 hollow spheres both increase as the reaction time increases. With increasing hollowness, the attenuation ability of electromagnetic wave of Fe3O4 spheres increases first and then decreases, finally increases sharply after the spheres break down. Samples with strong attenuation ability can achieve good impedance matching, which it does preferentially as the absorber thickness increases. Fe3O4 hollow spheres show the best microwave absorption performance when the reaction time is 24 h. The minimum reflection loss (RL (min)) can reach −40 dB, while the thickness is only 3.2 mm.

Synthesis of novel hierarchical CoNi@NC hollow microspheres with enhanced microwave absorption performance

2021 ◽  
Vol 32 (6) ◽  
pp. 8000-8016
Author(s):  
Weixing Min ◽  
Dongwei Xu ◽  
Ping Chen ◽  
Guanzhen Chen ◽  
Qi Yu ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Hollow Microspheres ◽  
Absorption Performance ◽  
Microwave Absorption Performance

Sulfur‐doped biomass‐derived hollow carbon microtubes toward excellent microwave absorption performance

2021 ◽  
Vol 32 (5) ◽  
pp. 6260-6268
Author(s):  
Fei Huang ◽  
Shipeng Wang ◽  
Wei Ding ◽  
Min Zhang ◽  
Xiangkai Kong ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Absorption Performance ◽  
Hollow Carbon ◽  
Microwave Absorption Performance
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