Journal of Materials Science Materials in Electronics, Journal Year: 2024, Volume and Issue: 36(1)
Published: Dec. 31, 2024
Language: Английский
Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)
Published: June 11, 2024
Abstract The exploration of novel multivariate heterostructures has emerged as a pivotal strategy for developing high-performance electromagnetic wave (EMW) absorption materials. However, the loss mechanism in traditional is relatively simple, guided by empirical observations, and not monotonous. In this work, we presented semiconductor–semiconductor–metal heterostructure system, Mo–MXene/Mo–metal sulfides (metal = Sn, Fe, Mn, Co, Ni, Zn, Cu), including semiconductor junctions Mott–Schottky junctions. By skillfully combining these distinct functional components (Mo–MXene, MoS 2 , metal sulfides), can engineer multiple heterogeneous interface with superior capabilities, broad effective bandwidths, ultrathin matching thickness. successful establishment gives rise to built-in electric field that intensifies electron transfer, confirmed density theory, which collaborates dielectric polarization mechanisms substantially amplify EMW absorption. We detailed synthesis series featuring both semiconductor–semiconductor semiconductor–metal interfaces. achievements were most pronounced Mo–MXene/Mo–Sn sulfide, achieved remarkable reflection values − 70.6 dB at thickness only 1.885 mm. Radar cross-section calculations indicate MXene/Mo–metal have tremendous potential practical military stealth technology. This work marks departure from conventional component design limitations presents pathway creation advanced MXene-based composites potent capabilities.
Language: Английский
Citations
63
Advanced Science, Journal Year: 2024, Volume and Issue: unknown
Published: July 16, 2024
The excellent dielectric properties and tunable structural design of metal sulfides have attracted considerable interest in realizing electromagnetic wave (EMW) absorption. However, compared with traditional monometallic bimetallic that are extensively studied, the unique physical characteristics solid-solution-type response to EMW not been revealed yet. Herein, a method for preparing high-purity is proposed based on solid-phase situ exsolution different ions from hybrid precursors. Utilizing CoAl-LDH/MIL-88A composite as precursor, Fe
Language: Английский
Citations
31
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown
Published: June 5, 2024
Abstract Hierarchical microarchitecture engineering is a state‐of‐the‐art approach to designing aerogel electromagnetic (EM) wave absorbers, offering huge potential in improving EM energy dissipation. However, the intrinsic feedback mechanism regarding specific influence of each parameter on properties not comprehensively revealed, making it challenging fully utilize aerogels achieve superior absorption performance. Herein, range MXene/rGO‐based with multilevel hierarchical configurations are fabricated by magnetic field‐guided strategy. Leveraging growth thermodynamics effects under field and bridging effect between adjacent rGO units, three models (lamellae ordering, interlayer spacing, layer thickness) constructed aerogels. Remarkably, progressively improve reflection loss ( RL ), effective bandwidth (EAB), matching thickness enhancing dielectric loss, decoupling attenuation‐impedance matching, adjusting power density, respectively. Consequently, exhibit stepwise enhancement performance, achieving −64.6 dB broad EAB 7.0 GHz at 1.8 mm thickness, surpassing alternative other configurations. This work elucidates synergistic multi‐effect dissipation waves aerogels, providing insights for advanced absorbers through diverse strategies.
Language: Английский
Citations
30
Journal of Materials Science Materials in Electronics, Journal Year: 2025, Volume and Issue: 36(2)
Published: Jan. 1, 2025
Language: Английский
Citations
2
Small, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 21, 2025
Aerogels with porous structures offer an attractive approach to modulating electromagnetic parameters and enhancing wave (EMW) absorption performance. However, conventional aerogels are limited by their single-scale pore size fixed orientation, which constrain EMW capabilities. This study introduces dual-scale pores dual-network structure constructed via constant-temperature freezing secondary-infusion method. Multiscale both micrometer- submillimeter-scale when the Ti3C2Tx MXene thermoplastic polyurethane solution is frozen dried at a specific temperature, leading ultra-wide effective bandwidth (EAB) reaching 10.41 GHz in vertical direction. Furthermore, address poor parallel direction, secondary infusion method applied form aerogel structure, forms reflective interfaces perpendicular incident various directions. adjustment enhances EAB direction from 1.58 5.93 GHz, marking 275.32% enhancement, while reaches 8.08 GHz. design strategy overcomes limitations of structural scale arrangement enriching attenuation mechanisms absorber, effectively reducing sensitivity incoming EMW, offering new insights for designing efficient absorbers.
Language: Английский
Citations
2
Small, Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 27, 2024
Abstract Dual atoms (DAs), characterized by flexible structural tunability and high atomic utilization, hold significant promise for atom‐level coordination engineering. However, the rational design with high‐density heterogeneous DAs pairs to promote electromagnetic wave (EMW) absorption performance remains a challenge. In this study, Ni─Cu coupled absorbers are precisely constructed on nitrogen‐rich carbon substrate, achieving an impressive metal loading amount of 4.74 wt.%, enabling huge enhancement effective bandwidth (EAB) EMW from 0 7.8 GHz. Furthermore, minimum reflection loss (RL min ) is −70.96 dB at matching thickness 3.60 mm, corresponding >99.99% incident energy. Both experimental results theoretical calculations indicate that synergistic effect sites in transfer electron‐rich initial N Cu sites, which induces strong asymmetric polarization redistribution local charge significantly improves performance. This work not only provides strategy preparation DA but also demonstrates role tuning symmetry level.
Language: Английский
Citations
8
Small, Journal Year: 2024, Volume and Issue: unknown
Published: Sept. 6, 2024
Abstract Highly efficient electromagnetic wave (EMW)‐absorbing multicomposites can be fabricated by constructing particular structures using suitable components. Expanded graphite (EG) has a 3D, low‐density porous structure; however, it suffers from poor impedance matching and EMW absorption properties. Based on this information, in the present study, NiCo 2 S 4 components with different morphologies are successfully loaded onto 3D EG surface facile microwave solvothermal method to achieve synergistic effect between The content is adjusted alter compositional morphology parameters of composites impedance‐matching obtain excellent heterogeneous interface induces an inhomogeneous spatial charge distribution enhances interfacial polarization. defects material oxygen‐containing groups induce dipole polarization, which polarization‐relaxation process composites. heterostructure “Fibonacci cauliflower”‐shaped /EG results optimal reflection loss −64.93 dB at filler rate only 14 wt.%. Analysis conduction polarization mechanisms carbon‐based materials interfaces led development materials.
Language: Английский
Citations
3
Journal of Materials Science Materials in Electronics, Journal Year: 2025, Volume and Issue: 36(2)
Published: Jan. 1, 2025
Language: Английский
Citations
0
Journal of Materials Science Materials in Electronics, Journal Year: 2025, Volume and Issue: 36(2)
Published: Jan. 1, 2025
Language: Английский
Citations
0
ACS Applied Nano Materials, Journal Year: 2025, Volume and Issue: unknown
Published: March 8, 2025
Language: Английский
Citations
0