ACS Applied Engineering Materials, Год журнала: 2024, Номер unknown
Опубликована: Дек. 3, 2024
Язык: Английский
Advanced Functional Materials, Год журнала: 2025, Номер unknown
Опубликована: Янв. 28, 2025
Abstract Excessive electromagnetic pollution caused by waves can interfere with the normal use of electronic devices or cause unnecessary damage to human health. Although conductive polymer composites (CPCs) are used replace traditional metals as an effective strategy for managing undesirable waves, CPCs have a non‐negligible trade‐off in enhancement interference (EMI) shielding effectiveness and absorption coefficient because their reflection‐dominated EMI mechanism. Therefore, alleviate secondary pollution, absorption‐dominated asymmetric structures urgently needed. Recently, structural designs advanced significantly, but seldom been summarized discussed detail. Consequently, this review first systematically summarizes current progress after brief clarification about necessity configuration structure design. Afterward, various fiber, layered, porous, composite described. Besides, versatility is briefly introduced. Finally, challenges prospects proposed guide future advancement field.
Язык: Английский
Процитировано
3
ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown
Опубликована: Март 13, 2025
Flexible electronic circuits are critical in biomedical devices, human–machine interfaces, and wearable sensing systems, which further require flexible conductive materials with high conductivity, stretchability, electrical stability. Liquid metal (LM) has attracted much attention due to its unique metallic conductivity room-temperature fluidic properties. However, LM's surface tension properties increase the difficulty of patterning processing. Here, we report a scalable simple fabrication method based on femtosecond laser ablation for facile patterned LM Cu composite electrodes (LM@Cu) substrates. The LM@Cu electrodes, fabricated utilizing exceptional micro–nanoprocessing precision three-dimensional capabilities lasers, exhibit resolution (approximately 5 μm), superior (4.08 × 104 S/cm), enhanced In addition planar circuits, successfully 3D-patterned electrode PDMS hemispheres. presence ultrathin copper foils significantly improves wettability substrate, occurrence alloying reactions between circumvents challenges posed by pattern fabrication. We investigated electromechanical under twisting, bending, stretching detail. addition, serve as an interface rigid devices When suffering external damage, remain working after brush coating excellent fluidity LM. To explore this approach's potential, demonstrate various applications electronics, including stretchable luminous wristbands, strain sensors, "visible" thermotherapy panels relieving aching joints.
Язык: Английский
Процитировано
3
Nano-Micro Letters, Год журнала: 2024, Номер 17(1)
Опубликована: Окт. 28, 2024
Abstract Conductive polymer foam (CPF) with excellent compressibility and variable resistance has promising applications in electromagnetic interference (EMI) shielding other integrated functions for wearable electronics. However, its insufficient change amplitude of compressive strain generally leads to a degradation performance during deformation. Here, an innovative loading strategy conductive materials on is proposed significantly increase the contact probability area components under compression. Unique inter-skeleton films are constructed by alginate-decorated magnetic liquid metal polymethacrylate hanged between skeleton (denoted as AMLM-PM foam). Traditional point skeletons compression upgraded planar films. Therefore, reaches four orders magnitude Moreover, can improve mechanical strength foam, prevent leakage scattering EM wave. strain-adaptive EMI shows compression-enhanced effectiveness, solving problem traditional CPFs upon The upgrade response also enables achieve sensitive pressure sensing over wide range compression-regulated Joule heating function.
Язык: Английский
Процитировано
15
Small Methods, Год журнала: 2024, Номер unknown
Опубликована: Окт. 10, 2024
The popularity of portable and wearable flexible electronic devices, coupled with the rapid advancements in military field, requires electromagnetic interference (EMI) shielding materials lightweight, thin, characteristics, which are incomparable for traditional EMI materials. film can fulfill above requirements, making them among most promising next-generation devices. Meticulously controlling structure composite while optimizing parameters constructed components effectively dissipate transform wave energy. Herein, review systematically outlines high-performance films through structural design strategies, including homogeneous structure, layered porous structure. attenuation mechanism evaluation (Schelkunoff theory calculation theory) performance introduced detail. Moreover, effect attributes properties on is analyzed, summarizing criteria elucidating relevant mechanism. Finally, future challenges potential application prospects prospected. This provides crucial guidance construction advanced tailored highly customized personalized devices future.
Язык: Английский
Процитировано
13
Advanced Materials Technologies, Год журнала: 2025, Номер unknown
Опубликована: Март 19, 2025
Abstract This study successfully fabricates an ultra‐lightweight buckypaper(BP)‐Ni‐Cu layered structure film using vacuum filtration and chemical‐electroplating methods, achieving a thickness of 34 µm surface density 50 g m − 2 . The exhibits notably low square resistance 9.5 mΩ □ −1 Regarding electromagnetic shielding performance, it exceptional effectiveness across multiple frequency bands: 96.67 dB in the Partial S‐band (2.6–4 GHz), 65.05 C1 band (4–6 64.23 C2 (6–8 87.04 X (8–12 90.46 Ku (12–18 GHz). In terms mechanical properties, compared with tensile fracture strength 33.67 MPa BP film, BP‐Ni is enhanced to 51.9 MPa, that BP‐Ni‐Cu elevated 49.43 MPa. Additionally, demonstrates good thermal stability at temperatures up 300 ° C. It also favorable electrical conductivity. Overall, considering its excellent characteristics, including multi‐band this presents novel highly promising solution for aerospace applications.
Язык: Английский
Процитировано
1
Composites Communications, Год журнала: 2025, Номер unknown, С. 102364 - 102364
Опубликована: Март 1, 2025
Язык: Английский
Процитировано
1
Chemical Engineering Journal, Год журнала: 2024, Номер 500, С. 156896 - 156896
Опубликована: Окт. 24, 2024
Язык: Английский
Процитировано
3
Journal of Materials Science Materials in Electronics, Год журнала: 2025, Номер 36(12)
Опубликована: Апрель 1, 2025
Язык: Английский
Процитировано
0
ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown
Опубликована: Апрель 28, 2025
Electromagnetic interference (EMI) shielding fibers are crucial in practical uses for their flexibility and one-dimensional form. However, application is limited by poor compatibility between EMI components fiber substrates, high electromagnetic wave reflectivity. Herein, a core/shell-structured introduced, featuring core of Ga-In-Sn-Zn alloy, Carbopol, air bubbles, shell ionogel formed from copolymerized acrylamide acrylic acid. A single achieves total effectiveness ∼35 dB within the 2-18 GHz range, which increases to ∼70 when three stacked. Remarkably, demonstrates enhanced performance following stretching recovery. Additionally, it exhibits excellent impedance matching, with reflection power coefficient as low 0.14 at 10 GHz. The fiber's mechanism encompasses shielding, absorption shielding─attributable conduction loss polarization loss─and multiple shielding. Furthermore, shows potential strain sensor. This research offers an effective strategy creating flexible capabilities EM reflection.
Язык: Английский
Процитировано
0
Advanced Materials, Год журнала: 2025, Номер unknown
Опубликована: Май 6, 2025
Abstract Efficient and reliable information transmission is crucial in the widespread use of electronic products wireless communication. Additionally, it vital to address electromagnetic interference (EMI) radiation that arise from communication process. In particular, emergence flexible has posed new hurdles for EM functional materials with flexibility high performance. Liquid metal (LM) an innovative material possesses both conductivity metals fluidity reconfigure like a liquid. These characteristics paved way developing novel devices products. This review provides overview current status future potential LM‐based materials. It highlights latest progress applications such as EMI shielding, EM‐wave absorption, (antennas). Finally, primary obstacles are discussed revealed directions their advancement. Overall, research on indicates they have great promote development materials, thus providing possibilities advancement
Язык: Английский
Процитировано
0