Journal ArticleDOI
Broadband and Tunable High‐Performance Microwave Absorption of an Ultralight and Highly Compressible Graphene Foam
Yi Zhang,Yi Huang,Tengfei Zhang,Huicong Chang,Peishuang Xiao,Honghui Chen,Zhiyu Huang,Yongsheng Chen +7 more
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TLDR
The broadband and tunable high-performance microwave absorption properties of an ultralight and highly compressible graphene foam (GF) are investigated and it is shown that via physical compression, the microwave absorption performance can be tuned.Abstract:
The broadband and tunable high-performance microwave absorption properties of an ultralight and highly compressible graphene foam (GF) are investigated. Simply via physical compression, the microwave absorption performance can be tuned. The qualified bandwidth coverage of 93.8% (60.5 GHz/64.5 GHz) is achieved for the GF under 90% compressive strain (1.0 mm thickness). This mainly because of the 3D conductive network.read more
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An elegant coupling: Freeze-casting and versatile polymer composites
TL;DR: In this paper, the working principles and methodologies of ice-templating strategy and its recent advances in shaping and structuring of 3D-SMs and production of corresponding multifunctional polymer composites are summarized.
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Integration of efficient microwave absorption and shielding in a multistage composite foam with progressive conductivity modular design
TL;DR: In this paper , the compatibility of high absorption and shielding capability based on progressive conductivity modular design was realized, and the correlations between the morphology and structure of the composite foam and the electromagnetic wave attenuation mechanism were established via electromagnetic simulation.
Journal ArticleDOI
All-dielectric radar absorbing array metamaterial based on silicon carbide/carbon foam material
Li Wanchong,Li Wanchong,Li Chusen,Lin Lihai,Lin Lihai,Yan Wang,Jin-Song Zhang,Jin-Song Zhang +7 more
TL;DR: In this article, a kind of all-dielectric radar absorbing array metamaterial (AMM) is created by simulation and experiment, and an optimized AMM with excellent absorption properties is designed and prepared.
Journal ArticleDOI
Combination effect of carbon nanofiber and ketjen carbon black hybrid nanofillers on mechanical, electrical, and electromagnetic interference shielding properties of chlorinated polyethylene nanocomposites
Subhadip Mondal,Subhadip Mondal,Revathy Ravindren,Poushali Bhawal,Beomsu Shin,Sayan Ganguly,Changwoon Nah,Narayan Ch. Das +7 more
TL;DR: In this article, the authors reported the fabrication of chlorinated polyethylene (CPE) nanocomposites filled with hybrid nanofillers of functionalized carbon nanofiber (FCNF) and nano-structured ketjen carbon black (K-CB) by using solution blending approach.
Journal ArticleDOI
ZnFe2O4@Polypyrrole nanocomposites as an efficient broadband electromagnetic wave absorber at 2–40 GHz
Yaqing Ge,Cuiping Li,Xiaohui Jiang,Geoffrey I. N. Waterhouse,Lijuan Zhang,Zhiming Zhang,Liangmin Yu +6 more
TL;DR: In this paper, polypyrrole-coated ZnFe2O4-PPy nanocomposites were successfully synthesized via a simple in-situ polymerization process, then evaluated as electromagnetic wave (EMW) absorbers over the 2-40 GHz frequency range.
References
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Journal ArticleDOI
Three-dimensional flexible and conductive interconnected graphene networks grown by chemical vapour deposition
TL;DR: The direct synthesis of three-dimensional foam-like graphene macrostructures, which are called graphene foams (GFs), by template-directed chemical vapour deposition is reported, demonstrating the great potential of GF/poly(dimethyl siloxane) composites for flexible, foldable and stretchable conductors.
Journal ArticleDOI
Microwave Absorption Enhancement and Complex Permittivity and Permeability of Fe Encapsulated within Carbon Nanotubes
TL;DR: In this paper, the absorption properties of CNT/crystalline Fe nanocomposites have been investigated and it was shown that the absorption property is due to the confinement of crystalline Fe in carbon nanoshells, deriving mainly from magnetic rather than electric effects.
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Multifunctional, ultra-flyweight, synergistically assembled carbon aerogels.
Haiyan Sun,Zhen Xu,Chao Gao +2 more
TL;DR: All carbon aerogels with ultralow density and temperature-invariant super-elasticity are fabricated by facile assembling of commercial carbon nanotubes and chemically-converted giant graphene sheets, on the basis of the synergistic effect between elastic CNTs ribs and giant graphene cell walls.
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Lightweight and Flexible Graphene Foam Composites for High‐Performance Electromagnetic Interference Shielding
TL;DR: It is believed that high electrical conductivity and connectivity of the conductive fi llers can improve EMI shielding performance.
Journal ArticleDOI
Reduced graphene oxides: light-weight and high-efficiency electromagnetic interference shielding at elevated temperatures.
Bo Wen,Mao-Sheng Cao,Ming-Ming Lu,Wen-Qiang Cao,Honglong Shi,Jia Liu,Xi-Xi Wang,Haibo Jin,Xiao-Yong Fang,Wenzhong Wang,Jie Yuan +10 more
TL;DR: Chemical graphitized r-GOs, as the thinnest and lightest material in the carbon family, exhibit high-efficiency electromagnetic interference shielding at elevated temperature, attributed to the cooperation of dipole polarization and hopping conductivity.