Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 159777 - 159777
Опубликована: Янв. 1, 2025
Язык: Английский
Advanced Functional Materials, Год журнала: 2024, Номер unknown
Опубликована: Март 7, 2024
Abstract Promoting advanced functional films that integrate protective behaviors for synergetic radar, infrared (IR), and visible light is confronted with extreme challenges. The effective integration of shielding capacity IR camouflage into single‐component carbon remains an enormous challenge because limited conductivity high absorption. In this work, nanotube (CNT) excellent electromagnetic interference (EMI) shielding, switchable camouflage, energy conversion are obtained via a (FCCVD) method subsequent defect engineering strategies induced by temperature (Strategy I) N/S co‐doping II). Wherein the effect on electronic configuration as well multi‐spectra performance deeply explored. Ascribing to synergistic effects strategies, defective CNT present superior EMI effectiveness (SE) absorption ratio 86.9%, large span emissivity (0.479), which provides necessary condition various application scenarios. Under applied electric field excitation, radiation can adapt rapidly changing surroundings, such low‐high/high‐low temperatures. Besides, desirable de‐icing be achieved. This work supplies feasible strategy designing EM absorption, adaptive confront multiband surveillance.
Язык: Английский
Процитировано
111
Carbon, Год журнала: 2024, Номер 225, С. 119119 - 119119
Опубликована: Апрель 8, 2024
Язык: Английский
Процитировано
65
Nano Research, Год журнала: 2023, Номер 17(3), С. 2061 - 2069
Опубликована: Ноя. 18, 2023
Язык: Английский
Процитировано
54
Nano Letters, Год журнала: 2024, Номер 24(11), С. 3369 - 3377
Опубликована: Фев. 19, 2024
Microwave-absorbing materials with regulatable absorption frequency and optical camouflage hold great significance in intelligent electronic devices advanced stealth technology. Herein, we present an innovative microwave-absorbing foam that can dynamically tune microwave frequencies via a simple mechanical compression while parallel enabling over broad spectral ranges by adjusting the structural colors. The vivid colors spanning different color categories generated from thin-film interference be precisely regulated thickness of conformal TiO2 coatings on Ni/melamine foam. Enhanced interfacial defect-induced polarizations resulting introduction coating synergistically contribute to dielectric attenuation performance. Consequently, such exhibits exceptional capabilities, tuned S band Ku manipulating its ratio. Additionally, simulation calculations validate adjustable electromagnetic wave loss behavior, offering valuable insights for development next-generation across diverse fields.
Язык: Английский
Процитировано
54
Advanced Science, Год журнала: 2024, Номер 11(17)
Опубликована: Фев. 25, 2024
MXene-based thermal camouflage materials have gained increasing attention due to their low emissivity, however, the poor anti-oxidation restricts potential applications under complex environments. Various modification methods and strategies, e.g., addition of antioxidant molecules fillers been developed overcome this, but realization long-term, reliable using MXene network (coating) with excellent comprehensive performance remains a great challenge. Here, hybrid comodified hyaluronic acid (HA) hyperbranched polysiloxane (HSi) is designed fabricated. Notably, presence appreciated HA oxidation sheets without altering infrared stealth performance, superior other water-soluble polymers; while HSi can act as efficient cross-linking agents generate strong interactions between molecules. The optimized MXene/HA/HSi composites exhibit mechanical flexibility (folded into crane structure), good water/solvent resistance, long-term stable capability (with emissivity ≈0.29). reliability (≈8 months) various outdoor weathers scalable coating MXene-coated textile enable them disguise IR signal targets in environments, indicating promise achieved material for camouflage, stealth, counter surveillance.
Язык: Английский
Процитировано
52
Small, Год журнала: 2023, Номер 19(46)
Опубликована: Июль 10, 2023
Abstract Processing transition metal carbides/nitrides (MXenes) inks into large‐area functional coatings expects promising potential for electromagnetic interference (EMI) shielding and infrared stealth. However, the coating performances, especially scalable fabrication techniques, are greatly constrained by flake size stacking manner of MXene. Herein, production highly densified oriented MXene is demonstrated engineering interfacial interactions small flakes with catecholamine molecules. The molecules can micro‐crosslink nanosheets, significantly improving ink's rheological properties. It favors shear‐induced sheet arrangement inhibition structural defects in blade process, making it possible to achieve high orientation densification assembly either or patterned printing. Interestingly, MXene/catecholamine exhibits conductivity up 12 247 S cm −1 ultrahigh specific EMI effectiveness 2.0 ×10 5 dB 2 g , obviously superior most reported materials. Furthermore, regularly assembled structure also endows low emissivities stealth applications. Therefore, ultraefficient emissivity prove feasibility applications aerospace, military, wearable devices.
Язык: Английский
Процитировано
51
Advanced Functional Materials, Год журнала: 2023, Номер 34(2)
Опубликована: Окт. 3, 2023
Abstract The rapid development of infrared surveillance technologies has attracted great attention for scientists to design advanced functional materials with prominent stealth and thermal camouflage effectiveness. In the current study, a sandwich‐like composite based on crosslinked polyimide aerogel, meso‐erythritol (mE)‐based phase‐change composite, an MXene film been developed achieve long‐term at elevated temperatures. this system, lower aerogel layer can act as barrier insulate heat transfer through its layer‐stacking structure under ultralow directional conduction. introduction middle ensures that system obtains dynamical temperature‐regulation capability sensible latent absorption mE phase change material, while upper provides very low emissivity surface system. As result, achieves significant reduction in radiation temperature high‐temperature target. Moreover, exhibits good electromagnetic interference shielding effectiveness, making obtain various complicated scenarios. This work promising approach realize targets security protection counter‐surveillance.
Язык: Английский
Процитировано
45
Carbon, Год журнала: 2023, Номер 214, С. 118338 - 118338
Опубликована: Июль 28, 2023
Язык: Английский
Процитировано
44
Nano-Micro Letters, Год журнала: 2024, Номер 16(1)
Опубликована: Июнь 14, 2024
Abstract Multifunctional, flexible, and robust thin films capable of operating in demanding harsh temperature environments are crucial for various cutting-edge applications. This study presents a multifunctional Janus film integrating highly-crystalline Ti 3 C 2 T x MXene mechanically-robust carbon nanotube (CNT) through strong hydrogen bonding. The hybrid not only exhibits high electrical conductivity (4250 S cm −1 ), but also demonstrates mechanical strength durability both extremely low environments, showing exceptional resistance to thermal shock. 15 μm thickness reveals remarkable multifunctionality, including efficient electromagnetic shielding effectiveness 72 dB X band frequency range, excellent infrared (IR) capability with an average emissivity 0.09 (a minimal value 0.02), superior camouflage performance over wide range (− 1 300 °C) achieving notable reduction the radiated by 243 °C against background °C, outstanding IR detection characterized 44% increase when exposed 250 W radiation. MXene/CNT offers feasible solution shielding/detection under challenging conditions.
Язык: Английский
Процитировано
32
Nano-Micro Letters, Год журнала: 2024, Номер 17(1)
Опубликована: Окт. 16, 2024
Developing advanced stealth devices to cope with radar-infrared (IR) fusion detection and diverse application scenarios is increasingly demanded, which faces significant challenges due conflicting microwave IR cloaking mechanisms functional integration limitations. Here, we propose a multiscale hierarchical structure design, integrating wrinkled MXene shielding layer flexible Fe
Язык: Английский
Процитировано
29