High-performance Carbonaceous Absorbers: From Heterogeneous Absorbents to Data-driven Metamaterials

Carbon, Journal Year: 2024, Volume and Issue: unknown, P. 119850 - 119850

Published: Nov. 1, 2024

Language: Английский

---

Lightweight magnetic carbon nanotube/cellulose nanofibre aerogels with microstructure engineering for enhanced microwave absorption

Carbon, Journal Year: 2025, Volume and Issue: unknown, P. 120020 - 120020

Published: Jan. 1, 2025

Language: Английский

---

In situ growth of the Y₃Si₂C₂ interphase in SiC_f‐reinforced mullite ceramics for enhanced electromagnetic wave absorption

Journal of the American Ceramic Society, Journal Year: 2025, Volume and Issue: unknown

Published: March 22, 2025

Abstract To meet the rigorous demands placed on electromagnetic (EM) wave absorbing (EWA) materials by harsh service conditions and to reduce EM power density, development of ceramic‐based EWA with high reliability stability has become a subject significant focus. In this study, yttrium silicide carbide interphase was in situ synthesized silicon fibers fabricate Y₃Si₂C₂–SiC f composite molten salt method. These were then incorporated into mullite ceramic matrix, /mullite composites prepared gel injection molding, aiming at enhancing properties. The exhibited reflection loss −28.97 dB 2.44 mm thickness an effective absorption bandwidth 3.066 GHz, outperforming pure SiC due addition . A modified Drude–Lorentz model developed capture multi‐peak permittivity behavior composites. results showed that dipole relaxation hopping migration localized electrons played key roles overall microwave energy attenuation, which closely matched experimental data. Furthermore, simulations electric field distribution radar cross‐section confirmed superior capability practical application potential This study offers valuable theoretical insights design ‐reinforced materials.

Language: Английский

---

Tetra‐needle like ZnO whisker doped graphene composites for radar/infrared compatible stealth properties

Polymer Composites, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 23, 2025

Abstract The combination of radar stealth and infrared (IR) technology has emerged as the main focus contemporary research due to diversification detector functions increased detection accuracy. In this paper, Tetra‐needle like ZnO whisker/graphene(T‐ZnOw/G) composites with excellent radar/IR performance were prepared by simple physical mixing. T‐ZnOw had electromagnetic wave (EMW) absorbing properties its special tetragonal needle could improve impedance matching mixing an appropriate amount graphene, which enhances interfacial polarization improves EMW absorption composite material. Upon adjusting mass ratio T‐ZnOw/G/paraffin composites, it was discovered that when T‐ZnOw/G set at 1:4, minimum reflection loss (RL min ) −41.30 dB. Additionally, effective bandwidth (EAB) 3.36 GHz, high 0.98. cross sections (RCS) less than −10 dBm 2 , indicating some stealth. IR stealth, low emissivity thermal camouflage ability temperature difference between T‐ZnOw/G/epoxy resin surrounding environment only 2.5°C after 5 radiation 80°C heating platform, certain on human body, electronic equipment, tank model. materials demonstrated compatible ability, providing a new idea for realization multiple materials. Highlights Development radar/infrared composites. contact graphene properties. CST simulation simulates material RCS. application in different devices.

Language: Английский

---

Innovations Progress in Emerging Multifunctional Aramid Nanofiber Aerogels

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: 17(9), P. 13302 - 13323

Published: Feb. 19, 2025

Aerogels have attracted great attention in the academic and industrial fields due to their intrinsic low density, high porosity, specific surface area. As an ideal nanobuilding block for advanced aerogels, research community has shown a strong interest aramid nanofiber (ANF) aerogel materials applications frontier fields. However, there is lack of comprehensive review basic development practical pure ANF aerogels regarding these latest achievements past decade. This aims fill this gap by comprehensively exploring preparation, properties, application progress, challenges, prospects aerogels. We begin with summary rheological principles dispersions, different preparation strategies, drying methods Then, unique properties various morphologies outstanding advantages based on are critically reviewed. Besides, progress multifunctional flexible thermal insulation, environmental protection, energy storage, other summarized. Finally, we explore main challenges give insights further promotion from lab-scale industry-scale.

Language: Английский

---

A Recyclable, Adhesive, and Self-Healable Ionogels Based on Zinc-Halogen Coordination Anion Crosslinked Poly (Ionic Liquid)/Ionic Liquid Network for High- Performance Microwave Absorbing

Published: Jan. 1, 2025

Language: Английский

---

3D printed flexible composites based on carbon fiber-led interfacial modification strategy for enhanced microwave absorption

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 502, P. 157810 - 157810

Published: Nov. 24, 2024

Language: Английский

---

In-situ Construction of Petal-liked porous Co coating layers for electromagnetic wave absorption materials with rich interface-polarization

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 157870 - 157870

Published: Nov. 1, 2024

Language: Английский

---