Sustainable materials and technologies, Год журнала: 2024, Номер 40, С. e00949 - e00949
Опубликована: Апрель 23, 2024
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
107
Advanced Materials, Год журнала: 2024, Номер 36(24)
Опубликована: Март 12, 2024
Abstract Modern human civilization deeply relies on the rapid advancement of cutting‐edge electronic systems that have revolutionized communication, education, aviation, and entertainment. However, electromagnetic interference (EMI) generated by digital poses a significant threat to society, potentially leading future crisis. While numerous efforts are made develop nanotechnological shielding mitigate detrimental effects EMI, there is limited focus creating absorption‐dominant solutions. Achieving EMI shields requires careful structural design engineering, starting from smallest components considering most effective wave attenuating factors. This review offers comprehensive overview structures, emphasizing critical elements design, mechanisms, limitations both traditional shields, common misconceptions about foundational principles science. systematic serves as scientific guide for designing structures prioritize absorption, highlighting an often‐overlooked aspect
Язык: Английский
Процитировано
87
Advanced Functional Materials, Год журнала: 2024, Номер 34(28)
Опубликована: Март 10, 2024
Abstract Wearable sensing technologies have witnessed rapid development in recent years due to their accessibility, functionality, and affordability. However, heat accumulation electromagnetic interference electronic components adversely affect the performance seriously damage human health. Herein, cellulose nanofibers (CNFs)‐based composites with high thermal conductivity (TC) excellent (EMI) shielding are prepared using CNFs as templates followed by coating tannic acid non‐covalent 3‐aminopropyltriethoxysilane covalent co‐modified graphene nanoplatelets (denoted mGNPs) through a simple electrostatic self‐assembly method. The subsequent hot‐pressing process yield order layer mGNPs CNFs‐based distributed along orientation close contact CNFs, fashion similar nervous system. resulting reveal TC of 136.2 W/(m·K) superior EMI effectiveness 105 dB. Thus, they used wearable sensors based on triboelectric effect monitor health real‐time, well express emotion Morse code. In sum, proposed strategy provides an avenue prolong service life flexible ensure safe use, promising for future wisdom healthcare smart robotics.
Язык: Английский
Процитировано
59
Journal of Material Science and Technology, Год журнала: 2024, Номер 191, С. 23 - 32
Опубликована: Янв. 26, 2024
Язык: Английский
Процитировано
51
Materials Today Physics, Год журнала: 2024, Номер 40, С. 101330 - 101330
Опубликована: Янв. 1, 2024
Язык: Английский
Процитировано
46
Nano-Micro Letters, Год журнала: 2024, Номер 16(1)
Опубликована: Июнь 17, 2024
Abstract Lightweight infrared stealth and absorption-dominant electromagnetic interference (EMI) shielding materials are highly desirable in areas of aerospace, weapons, military wearable electronics. Herein, lightweight high-efficiency dual-functional segregated nanocomposite foams with microcellular structures developed for integrated EMI via the efficient scalable supercritical CO 2 (SC-CO ) foaming combined hydrogen bonding assembly compression molding strategy. The obtained exhibit superior performances benefitting from synergistic effect effective thermal insulation low emissivity, outstanding attributed to synchronous construction structures. Particularly, present a large radiation temperature reduction 70.2 °C at object 100 °C, significantly improved EM wave absorptivity/reflectivity ( A / R ratio 2.15 an ultralow Ti 3 C T x content 1.7 vol%. Moreover, working reliability stability upon dynamic cycles. results demonstrate that have excellent potentials applications
Язык: Английский
Процитировано
35
Nature Communications, Год журнала: 2024, Номер 15(1)
Опубликована: Июль 20, 2024
Integration of functional fillers into liquid metals (LM) induces rheology modification, enabling the free-form shaping LM at micrometer scale. However, integrating non-chemically modified low-dimensional materials with to form stable and uniform dispersions remain a great challenge. Herein, we propose solvent-assisted dispersion (SAD) method that utilizes fragmentation reintegration in volatile solvents engulf disperse fillers. This successfully integrates MXene uniformly LM, achieving better internal connectivity than conventional dry powder mixing (DPM) method. Consequently, MXene/LM (MLM) coating exhibits high electromagnetic interference (EMI) shielding performance (105 dB 20 μm, which is 1.6 times coatings prepared by DPM). Moreover, rheological characteristic MLM render it malleable facilitates direct printing adaptation diverse structures. study offers convenient for assembling materials, paving way development multifunctional soft devices.
Язык: Английский
Процитировано
29
Nature Communications, Год журнала: 2024, Номер 15(1)
Опубликована: Сен. 6, 2024
Язык: Английский
Процитировано
24
Small, Год журнала: 2024, Номер 20(24)
Опубликована: Янв. 4, 2024
In this study, lightweight, flexible, and environmentally robust dual-nanofibrous membranes made of carbon nanotube (CNT) polytetrafluoroethylene (PTFE) are fabricated using a novel shear-induced in situ fibrillation method for electromagnetic interference (EMI) shielding. The unique spiderweb-like network, constructed from fine CNTs PTFE fibrils, integrates the inherent characteristics these two materials to achieve high conductivity, superhydrophobicity, extraordinary chemical resistance. demonstrate EMI shielding effectiveness (SE) 25.7–42.2 dB at thickness range 100–520 µm normalized surface-specific SE can reach up 9931.1 dB·cm2·g−1, while maintaining reliability even under extremely harsh conditions. addition, distinct electrothermal photothermal conversion properties be achieved easily. Under stimulation modest electrical voltage (5 V) light power density (400 mW·cm−2), surface temperatures CNT/PTFE 135.1 147.8 °C, respectively. Moreover, exhibit swift, stable, highly efficient thermal capabilities, endowing them with self-heating de-icing performance. These versatile, breathable membranes, coupled their facile fabrication process, showcase tremendous application potential aerospace, Internet Things, wearable electronic equipment extreme environments.
Язык: Английский
Процитировано
22
Composites Science and Technology, Год журнала: 2024, Номер 255, С. 110724 - 110724
Опубликована: Авг. 1, 2024
Язык: Английский
Процитировано
22