Core-shell Fe3O4@SnO2 nanochains toward the application of radar-infrared-visible compatible stealth

Qiao, Mingtao; Tian, Yurui; Li, Jiaxin; He, Xiaowei; Lei, Xingfeng; Zhang, Qiuyu; Ma, Mingliang

doi:10.1016/j.jcis.2021.12.012

Cited by 42 publications

(17 citation statements)

References 75 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Based on the theory of EM wave loss, the EMI-shielding performance of materials mainly depends on the reflection, absorption, and multiple reflection abilities . In this regard, a superior EMI-shielding effect can be achieved through integrating multiple conductive/dielectric/magnetic EM wave loss mechanisms. , Carbon materials, such as carbon nanotubes (CNTs), carbon black, carbon nanofibers, − metal carbide nitrides (MXenes), − and graphene nanoplates, , have the advantages of superior electrical conductivity, low density, and adjustable composition, which have attracted much attention for EMI-shielding materials. , Especially, carbon foams with a three-dimensional (3D) conductive network can effectively enhance multiple reflections, resulting in repeat absorption and a highly efficient EMI-shielding performance. , Moreover, the high-temperature resistance makes it possible to be used in harsh environments.…”

Section: Introductionmentioning

confidence: 99%

“…Based on the theory of EM wave loss, the EMI-shielding performance of materials mainly depends on the reflection, absorption, and multiple reflection abilities. 1 In this regard, a superior EMI-shielding effect can be achieved through integrating multiple conductive/dielectric/magnetic EM wave loss mechanisms. 2,3 Carbon materials, such as carbon nanotubes (CNTs), 1 carbon black, 4 carbon nanofibers, 5−8 metal carbide nitrides (MXenes), 9−13 and graphene nanoplates, 14,15 have the advantages of superior electrical conductivity, low density, and adjustable composition, which have attracted much attention for EMI-shielding materials.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

In Situ Fabrication of Magnetic and Hierarchically Porous Carbon Films for Efficient Electromagnetic Wave Shielding and Absorption

Chu

Gao

et al. 2022

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Carbon-based materials have been recognized as a promising method to eliminate electromagnetic interference (EMI) shielding and electromagnetic (EM) wave absorption. However, developing lightweight, ultrathin, and efficient EM wave-shielding and wave-absorbing materials remains a challenge. Herein, a series of magnetic porous carbon composite films with a hierarchical network structure were fabricated via pyrolysis of porous polyimide (PI) films containing magnetic metallic salts of Fe(acac)3 and Ni(acac)2. After pyrolysis, the obtained uniform porous carbon films (CFs) possess a favorable EMI-shielding efficiency (SE) of 46 dB in the X-band with a thickness of ∼0.3 mm. In addition, a higher EMI SE of 58 dB can be achieved by increasing the thickness of the porous CF-20Ni to 0.53 mm. Moreover, the CF-20Ni composites also present effective EM wave-absorbing performance of RLmin = – 30.2 dB with a loading amount of 20 wt % at 13.0 GHz owing to the hierarchically conductive carbon skeleton, magnetic Ni nanoparticles, and dielectric interlaced carbon nanotube cluster within the micropores. These novel lightweight and ultrathin porous CFs are expected to be attractive candidates for efficient EM wave absorption and EMI shielding.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

In Situ Fabrication of Magnetic and Hierarchically Porous Carbon Films for Efficient Electromagnetic Wave Shielding and Absorption

Chu

Gao

et al. 2022

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…6,7 Metal oxide semiconductors have broad application prospects in multiband compatible stealth for avoiding the oxidation of magnetic components in the air and the overlapping problems of conductive materials. 8 α-Fe 2 O 3 is a high-temperature-resistant N-type semiconductor component with considerable dielectric loss capability and frequencyinsensitive dielectric parameters (ε′ and ε″), which contribute to the impedance matching at high frequencies. 9,10 Furthermore, different shapes (dendritic-like, rod-like, burr-like, etc.)…”

Section: Introductionmentioning

confidence: 99%

Morphology-Controlled Fabrication Strategy of Hollow Mesoporous Carbon Spheres@f-Fe₂O₃ for Microwave Absorption and Infrared Stealth

Tang

et al. 2022

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

The design and development of radar-−infrared compatible stealth materials are challenging in the field of broadband absorption due to the contradiction of stealth requirements and mechanisms in different frequency bands. However, hollow structures show great promise for multispectral stealth because they can lengthen the attenuation path of electromagnetic waves (EMWs) for microwave absorption, interrupt the continuity of heat-transport channels, and lower the thermal conductivity to realize infrared stealth. Here, a new morphological fabrication strategy has been developed to efficiently prepare compatible stealth nanomaterials. In a specific hydrothermal process, the confined growth of flake α-Fe 2 O 3 (f-Fe 2 O 3 ) outside of hollow mesoporous carbon spheres (HMCS) is achieved using NH 3 •H 2 O as a shape-controlled reagent. The introduction of f-Fe 2 O 3 helps to lower infrared emissivity and improve high-frequency impedance matching, which depends on the stable dielectric property of the specific flake shape. Moreover, the size of f-Fe 2 O 3 can be regulated by changing the constituent proportion in the hydrothermal suspension to obtain excellent performance. The minimum reflection loss (RL) of the HMCS@f-Fe 2 O 3 -6 composite is −34.16 dB at 2.4 mm, and the effective absorption bandwidth (EAB) reaches 4.8 GHz. Furthermore, the lowest emissivities of the HMCS@f-Fe 2 O 3 -6-20 wt %/polyetherimide (PEI) film in the 3−5 and 8−14 μm infrared wavebands are 0.212 and 0.508, respectively. These discoveries may pave the way for the development of radar−infrared compatible stealth materials from the perspective of microstructural design.

show abstract

“…Metal materials are mainly utilized to realize infrared stealth properties. [23][24][25] Although the strong electromagnetic wave (EMW) reection of metal materials ensures their good infrared reection performance, it is not conducive to achieving radar stealth properties. Notably, considering the essential corelationship among structure-composition-performance, it is easy to cause RL strength decrease and/or EAB shortness of target absorbers when researchers commit to realizing their other low infrared emissivity.…”

Section: Introductionmentioning

confidence: 99%

A novel multi-dimensional structure of graphene-decorated composite foam for excellent stealth performance in microwave and infrared frequency bands

et al. 2022

View full text Add to dashboard Cite

show abstract

Core-shell Fe3O4@SnO2 nanochains toward the application of radar-infrared-visible compatible stealth

Cited by 42 publications

References 75 publications

In Situ Fabrication of Magnetic and Hierarchically Porous Carbon Films for Efficient Electromagnetic Wave Shielding and Absorption

In Situ Fabrication of Magnetic and Hierarchically Porous Carbon Films for Efficient Electromagnetic Wave Shielding and Absorption

Morphology-Controlled Fabrication Strategy of Hollow Mesoporous Carbon Spheres@f-Fe₂O₃ for Microwave Absorption and Infrared Stealth

A novel multi-dimensional structure of graphene-decorated composite foam for excellent stealth performance in microwave and infrared frequency bands

Contact Info

Product

Resources

About

Core-shell Fe3O4@SnO2 nanochains toward the application of radar-infrared-visible compatible stealth

Cited by 42 publications

References 75 publications

In Situ Fabrication of Magnetic and Hierarchically Porous Carbon Films for Efficient Electromagnetic Wave Shielding and Absorption

In Situ Fabrication of Magnetic and Hierarchically Porous Carbon Films for Efficient Electromagnetic Wave Shielding and Absorption

Morphology-Controlled Fabrication Strategy of Hollow Mesoporous Carbon Spheres@f-Fe2O3 for Microwave Absorption and Infrared Stealth

A novel multi-dimensional structure of graphene-decorated composite foam for excellent stealth performance in microwave and infrared frequency bands

Contact Info

Product

Resources

About

Morphology-Controlled Fabrication Strategy of Hollow Mesoporous Carbon Spheres@f-Fe₂O₃ for Microwave Absorption and Infrared Stealth