Ferromagnetic Ti3CNCl2-decorated RGO aerogel: From 3D interconnecting conductive network construction to ultra-broadband microwave absorber with thermal insulation property

Wang, Kaifeng; Chu, Wenshuang; Li, Hua; Chen, Yujie; Cai, Yunli; Liu, Hezhou

doi:10.1016/j.jcis.2021.05.166

Cited by 36 publications

(12 citation statements)

References 54 publications

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“…By extending the EMW propagation path, the EMA energy is structurally confined and may be dissipated as heat. [56] As shown in Figure 2i, at the reaction temperature, CuCl 2 becomes molten together with NaCl and KCl. The Al layer in Ti 3 AlC 2 is oxidized to Al 3þ by coreduction of Lewis acid Cu 2þ to Cu on the MXene surface.…”

Section: Molten Salt Etching Methodsmentioning

confidence: 94%

Section: Construction Routes Of Mxenes and Mxene‐based Compositesmentioning

confidence: 99%

“…By extending the EMW propagation path, the EMA energy is structurally confined and may be dissipated as heat. [ 56 ]…”

Section: Construction Routes Of Mxenes and Mxene‐based Compositesmentioning

confidence: 99%

mentioning

confidence: 99%

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Section: Molten Salt Etching Methodsmentioning

confidence: 94%

Section: Construction Routes Of Mxenes and Mxene‐based Compositesmentioning

confidence: 99%

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confidence: 99%

Chiral Asymmetric Polarizations Generated by Bioinspired Helical Carbon Fibers to Induce Broadband Microwave Absorption and Multispectral Photonic Manipulation

Huang

Duan

Shi

et al. 2022

Advanced Optical Materials

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as stealth systems, [1] electromagnetic pollu tion eradicators, [2] and various electronic and communicational devices, [3] etc. [4] Broadband absorption is key factor of MAMs, which derived from two types of materials: [5] dielectric loss materials (graphene, [6] carbon nanotubes, [7] biomass carbon materials, [8] conductive polymer, [9] ZnO, [10] MnO 2 , [11] etc.) and magnetic loss materials (ferrite, [12] carbonyl iron, [13] high entropy alloys, [14] and other ferromagnetic alloys [15] ). Previous studies have demonstrated that MAMs with both dielectric loss (permittivity) and magnetic loss (permeability) were more easily to achieve good impedance match and thus broadband absorption. [16] Common method for fabricating mentioned electromagnetic complexes was mixing dielectric and magnetic matters, the carbonyl iron/carbon nanotubes composite absorbers could exhibit double resonance of the complex permittivity and permeability, thus reach effective absorption (reflection loss (RL) ≤ −10 dB) within 9.7-18 GHz regime under 1.4 mm thickness. [17] However, such addition of ferromagnetic materials brings some disadvantages such as high density and easy oxidation. The mentioned drawback could be avoid by some complicated synthetic method such as doping ferromagnetic ions in dielectric materials, [3] or preparing metal-organic frameworks (MOFs). [18] In addition to the intrinsic parameters of materials, metastructures [19] and microstructures [20] could give MAMs new design freedoms to broad absorption bandwidth. Metastructures can give MAMs additional effect to form metamaterials, [21] which could improve the absorption bandwidth by constructing equivalent circuit models, [22] vortex current loss, [23] overlapped reflections, [24] and polarization rotation, [25] etc., a metamaterial with square unit cells made of carbon black can achieve absorption bandwidth that 2.35-18 GHz (absorptivity more than 96.8%) under thickness of 17 mm, [26] our previous works brought optical rotation of chiral metamaterials based on high entropy alloys to consume microwaves, the effective absorption bandwidth (RL ≤ −10 dB) covered 4-5.54, 6.66-8.12, and 8.84-18 GHz under 20 mm thickness. [27] Whereas the thickness of metamaterials has to close to wavelength, because the loss effects of metamaterials are generated by subwavelength resonance that based on wave theory, thus difficult to broadband Chirality, in which electromagnetic characteristic promotes asymmetric polarization, is expected to realize broadband absorption for microwave absorption materials (MAMs). Herein, inspired by the microstructure of nepenthes, a scalable approach is reported for fabricating hierarchical-chiral helical carbon fibers with broadband microwave absorption as well as multispectral chiral manipulation. The chiral potential barriers are established by applying helically distributed stress to the fiber, which induce helical electric dipoles via positive and negative charges accumulated at the potential barriers. The states of polarization loss by Debye relaxat...

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Dielectric‐Based Metamaterials for Near‐Perfect Light Absorption

Wang,

Qin,

Duan

et al. 2024

Adv Funct Materials

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The emergence of metamaterials and their continued prosperity have built a powerful working platform for accurately manipulating the behavior of electromagnetic waves, providing sufficient possibility for the realization of metamaterial absorbers with outstanding performance. However, metamaterial absorbers composed of metallic materials typically possess many unfavorable factors, such as non‐adjustable absorption, easy oxidation, low‐melting, and expensive preparation costs. The selection of dielectric materials provides excellent alternatives due to their remarkable properties, thus dielectric‐based metamaterial absorbers (DBMAs) have attracted much attention. To promote breakthroughs in DBMAs and guide their future development, this work systematically and deeply reviews the recent research progress of DBMAs from four different but progressive aspects, including physical principles; classifications, material selections and tunable properties; preparation technologies; and functional applications. Five different types of theories and related physical mechanisms, such as Mie resonance, guided‐mode resonance, and Anapole resonance, are briefly outlined to explain DBMAs having near‐perfect absorption performance. Mainstream material selections, structure designs, and different types of tunable DBMAs are highlighted. Several widely utilized preparation methods for customizing DBMAs are given. Various practical applications of DBMAs in sensing, stealth technology, solar energy absorption, and electromagnetic interference suppression are reviewed. Finally, some key challenges and feasible solutions for DBMAs’ future development are provided.

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Ferromagnetic Ti3CNCl2-decorated RGO aerogel: From 3D interconnecting conductive network construction to ultra-broadband microwave absorber with thermal insulation property

Cited by 36 publications

References 54 publications

2D MXene Nanomaterials: Synthesis, Mechanism, and Multifunctional Applications in Microwave Absorption

2D MXene Nanomaterials: Synthesis, Mechanism, and Multifunctional Applications in Microwave Absorption

Chiral Asymmetric Polarizations Generated by Bioinspired Helical Carbon Fibers to Induce Broadband Microwave Absorption and Multispectral Photonic Manipulation

Dielectric‐Based Metamaterials for Near‐Perfect Light Absorption

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