Journal of Materials Chemistry A, Год журнала: 2025, Номер unknown
Опубликована: Янв. 1, 2025
The controlled transition from o-CoSe 2 to the c-CoSe crystalline phase was achieved by using different levels of Br doping strategies modulate microwave absorption properties.
Язык: Английский
Carbon, Год журнала: 2024, Номер 229, С. 119502 - 119502
Опубликована: Июль 29, 2024
Язык: Английский
Процитировано
19
Advanced Functional Materials, Год журнала: 2025, Номер unknown
Опубликована: Фев. 5, 2025
Abstract Microwave‐absorbing materials are widely used in electromagnetic protection and military stealth fields. Hollow structure materials, as efficient microwave absorbing have garnered considerable attention, since they beneficial to multiple reflection enhance the attenuation loss of microwaves. Herein, a strategy is proposed prepare hollow Ni/NiO@PPy particles using water‐soluble template method combined with situ polymerization process. The cuboid constructed Na 2 SO 4 templates then filled into epoxy resin form composite films excellent absorption properties. film under optimal conditions exhibits minimum value −72.14 dB rate more than 99.99% filling content 10 wt.%. By adjusting thickness, an effective bandwidth 15.94 GHz can be achieved, which almost completely covers S, C, X, Ku bands. CST simulation results confirm outstanding radar cross‐section film. Remarkably, ultra‐low 2.5 wt.%, still achieves 99.90%, demonstrating highly content.
Язык: Английский
Процитировано
3
Journal of Material Science and Technology, Год журнала: 2025, Номер 229, С. 223 - 234
Опубликована: Фев. 16, 2025
Язык: Английский
Процитировано
3
Advanced Functional Materials, Год журнала: 2024, Номер unknown
Опубликована: Ноя. 12, 2024
Abstract Freeze casting is a solidification technique utilized in the fabrication of porous materials. However, freeze process quite complex, and significant challenges remain precisely controlling pore size shape structures. This study aims to investigate customization multifunctional electromagnetic wave (EMW) absorbers with 3D structures via casting. review initially presents fundamental principles underlying examines correlation between internal external factors during preparation porosity. The emerging trends constructing novel intricate macroscopic through are subsequently outlined. Furthermore, this focuses on composites various microstructures low‐dimensional building blocks, their EMW response properties. By regulating influencing mechanisms casting, absorption materials exhibit outstanding advantages such as property manipulation, controllable structure, high porosity, specific surface area, lightweight, flexibility. These features broaden applications shielding, mechanical property, radar stealth, thermal insulation fire prevention, flexible sensors, antifreeze ability, etc. In addition, we discuss prospects high‐performance using techniques.
Язык: Английский
Процитировано
15
Composites Communications, Год журнала: 2024, Номер 51, С. 102040 - 102040
Опубликована: Авг. 17, 2024
Язык: Английский
Процитировано
14
Advanced Functional Materials, Год журнала: 2024, Номер unknown
Опубликована: Сен. 15, 2024
Abstract Curved support can significantly change the electronic structure of a metal single‐atom (M‐SA) and thereby fine tune its intrinsic physicochemical properties. However, constructing asymmetrically coordinated M‐SAs on highly curved supports remains challenging. Here, an efficient strategy driven by different thermal decomposition rates two polymers is proposed to create Turing surface with stripes hollow carbon spheres (HCSs) for anchoring Fe‐N 3 S 1 moieties. Experimental theoretical calculation results reveal that asymmetric atoms strain Fe─N bonds induced efficiently break symmetric distribution charge around Fe enhance dielectric loss HCSs, synergistically improving electromagnetic wave absorption property. Remarkably, film constructed ‐anchored HCSs natural rubber exhibits wide effective bandwidth 7.68 GHz at filling ratio 6%. Moreover, also possesses excellent hydrophobicity, frost‐resistant ability, adhesiveness, flexibility, stretchability, heat‐dispersion which expand practical applications into various environments. This work provides insights synergistic effects configurations their properties offers new method preparation multifunctional films.
Язык: Английский
Процитировано
12
Materials Today Nano, Год журнала: 2025, Номер unknown, С. 100571 - 100571
Опубликована: Янв. 1, 2025
Язык: Английский
Процитировано
2
Progress in Materials Science, Год журнала: 2025, Номер unknown, С. 101456 - 101456
Опубликована: Фев. 1, 2025
Язык: Английский
Процитировано
2
Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 161364 - 161364
Опубликована: Март 1, 2025
Язык: Английский
Процитировано
2
Advanced Functional Materials, Год журнала: 2025, Номер unknown
Опубликована: Март 20, 2025
Abstract Elastic electromagnetic‐attenuation materials attract great attention for their extensive use both in civil communication and military stealth. Nevertheless, applications as intelligent remain less developed due to insufficient understanding of constructing highly efficient stimulus‐response structures. Herein, reduced‐graphene‐oxide‐hybridized polymeric absorbers (GPAs) are prototyped enable multi‐field coupled responses based on electromagnetic (EM) attenuation smart deformation. A nano‐organic hybrid structure is stabilized via intermolecular interactions between rGO conjugated liquid crystal molecules. It found that the dielectric polarization dominates attenuation, converting EM energy into thermal inducing mechanical The GPA incorporating 0.25 wt.% exhibits an average constant 5.7 times higher than pure absorber. Under open‐space microwave irradiation, optimal response time GPAs reduced by 85% ≈10 s. Based electromagnetic‐thermal‐mechanical GPAs, devices including a reconfigurable frequency selective surface customized microwave‐absorbing conceived, achieving transformation over 2.4 GHz radar reflection intensity. This study bridges gap from elastic material dissipative will furnish novel insights developing devices.
Язык: Английский
Процитировано
2