Materials Today Nano, Journal Year: 2025, Volume and Issue: unknown, P. 100609 - 100609
Published: March 1, 2025
Language: Английский
Carbon, Journal Year: 2024, Volume and Issue: unknown, P. 119738 - 119738
Published: Oct. 1, 2024
Language: Английский
Citations
20
Materials Today Nano, Journal Year: 2025, Volume and Issue: unknown, P. 100587 - 100587
Published: Feb. 1, 2025
Language: Английский
Citations
9
Langmuir, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 11, 2025
The increasing prevalence of electronic devices and 5G technology has exacerbated electromagnetic wave (EMW) pollution, necessitating effective countermeasures. Microwave-absorbing materials (MAM) offer promising solutions to address this issue. Owing its exceptional dielectric properties, low density, thermal conductivity, chemical stability, boron nitride (BN) is a suitable candidate for MAM development. This study investigates the optimization BN microwave absorption performance through nanocomposite fabrication. composite been engineered with enhanced polarization improved interfacial interactions by incorporating into an epoxy resin matrix modified silane-functionalized cardanol. resulting material exhibited superior surface roughness hydrophobicity. optimal formulation demonstrated outstanding achieving reflection loss −23 dB at 12.4 GHz thickness only 10 mm. Furthermore, displayed mechanical damping value 0.85. These results suggest that synergistic effect impedance matching multiple mechanisms within structure contributes performance.
Language: Английский
Citations
1
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 13, 2025
Abstract The dielectric and magnetic coexistence behavior of high entropy oxides (HEOs) injects infinite dynamism in promoting electromagnetic wave (EMW) absorption, but precisely constructing their regular geometries at the nanoscale remains challenging. Herein, controlled preparation reduced graphite oxide loaded (CoFeNiCuMn)O with various by a rapid plasma process is reported. Modifying only metal content precursor can effectively influence morphology properties resulting derivatives, achieving well‐matched impedance ensuring outstanding absorption performance. results show that truncated octahedral HEO/RGO composite exhibits strongest absorbing capacity, minimum reflection loss −57 dB 14.1 GHz corresponding effective bandwidth covering 4.13 GHz. Moreover, constitutive relationship between multi‐element synergies microwave characteristics systematically explored, mechanism proposed. Delayed wireless charging time simulated values RCS less than −10 dBm 2 whole detection angles further demonstrate its dissipation capability practical application scenarios. This study not enriches variety lightweight efficient materials also guides for new configuration design HEOs.
Language: Английский
Citations
1
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
1
Nano-Micro Letters, Journal Year: 2025, Volume and Issue: 17(1)
Published: Feb. 25, 2025
Abstract Magnetic absorbers with high permeability have significant advantages in low-frequency and broadband electromagnetic wave (EMW) absorption. However, the insufficient magnetic loss inherent conductivity of existing limit further expansion EMW absorption bandwidth. Herein, spinel (FeCoNiCrCu) 3 O 4 high-entropy oxides (HEO) are successfully constructed on surface FeCoNiCr 0.4 Cu 0.2 alloys (HEA) through low-temperature oxygen bath treatment. On one hand, HEO HEA different magnetocrystalline anisotropies, which is conducive to achieving continuous natural resonance improve loss. other low can serve as an impedance matching layer, magneto-electric co-modulation. When thickness 5 mm, minimum reflection (RL) value bandwidth (RL < − dB) bi-phase composites (BPHEC) reach 12.8 dB 633 MHz, respectively. The RCS reduction multilayer sample gradient characteristic 18.34 m 2 . In addition, BPHEC also exhibits temperature-stable performance, Curie temperature, oxidation resistance. maintains between 593 691 MHz from 50 150 °C. This work offers a new tunable strategy toward modulating genes for ultra-broadband megahertz
Language: Английский
Citations
1
Composites Science and Technology, Journal Year: 2025, Volume and Issue: unknown, P. 111131 - 111131
Published: March 1, 2025
Language: Английский
Citations
1
Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161603 - 161603
Published: March 1, 2025
Language: Английский
Citations
1
New Carbon Materials, Journal Year: 2025, Volume and Issue: 40(2), P. 293 - 316
Published: April 1, 2025
Language: Английский
Citations
1
Composites Science and Technology, Journal Year: 2024, Volume and Issue: unknown, P. 110944 - 110944
Published: Oct. 1, 2024
Language: Английский
Citations
6