Results 11 to 20 of about 296 (59)
Flexible, Robust Transparent Conductive Films With Excellent Electromagnetic Shielding Properties
ABSTRACT Transparent conductive films (TCFs) are indispensable components for next‐generation wearable electronics, intelligent robots, and electromagnetic interference (EMI) shielding devices. However, the fabrication of conventional random metallic mesh suffers from an inherent trade‐off between “randomness and controllability”.
Shanghao Lu +5 more
wiley +1 more source
ABSTRACT In recent years, materials capable of achieving efficient electromagnetic wave (EMW) absorption over a broad frequency range have attracted widespread attention. Such materials are not only significant in mitigating electromagnetic interference and pollution caused by the extensive use of electronic devices but also demonstrate outstanding ...
Maoxia Lu +7 more
wiley +1 more source
ABSTRACT The rapid advancement of 5G communication technology has intensified electromagnetic pollution, creating an urgent demand for flexible multifunctional fabrics with efficient electromagnetic interference (EMI) shielding performance. This study proposes a novel material‐stacked construction strategy to fabricate multifunctional MXene/cellulose ...
Zong‐Kai Yan +9 more
wiley +1 more source
ABSTRACT Emerging as attractive alternatives for sustainable, low‐cost, and high‐performance electromagnetic interference (EMI) shielding, biomass‐derived carbon is nonetheless constrained by a limited repertoire of shielding mechanisms. Herein, a straightforward method was employed to synthesize self‐supporting Co nanoparticles embedded in porous N ...
Yingjie Xu +6 more
wiley +1 more source
ABSTRACT The development of high‐performance electromagnetic protection materials integrating broadband absorption and effective shielding capabilities is hindered by challenges in simultaneously optimizing multiple electromagnetic properties through conventional material designs.
Changlong Du +9 more
wiley +1 more source
随着智能电网中一二次设备融合技术发展,一次设备和二次设备之间的距离大幅度减小,导致二次设备容易受到一次设备动作干扰而发生故障。文中针对真空断路器关合电容器组过程中产生的电磁干扰进行研究分析,采用高频涌流试验回路对其进行模拟,用电磁场探头以及测量设备同步采集电流波形和电磁干扰信号。利用小波变换分析了暂态电磁信号的时频特征,结果表明:电场干扰幅值最大为12.56 k V/m,主要分布在156.25~312.5 MHz和39.062 5 MHz以下两个频率范围;磁场干扰幅值最大为26.23 A/m ...
牛博 +6 more
doaj
Carbon Material Films for Flexible and Efficient Electromagnetic Interference Shielding: A Review
ABSTRACT With the rapid development of technology such as the Internet and electronic devices, electromagnetic radiation pollution has become an increasingly prominent issue, which negatively impacts both human health and the normal operation of equipment.
Yu‐Xin Chen +10 more
wiley +1 more source
Graphical abstract AbstractThe pressing demand for ultrathin and flexible shields to counter electromagnetic interference (EMI) has sparked interest in Ti3C2Tx MXene materials due to their exceptional electrical conductivity, tunable surface chemistry, and layered structure.
Zhao‐Yang Li +5 more
wiley +1 more source
基于传输线理论,介绍了一种电磁耦合等效电路模型,可用来分析外界电磁场照射下,有导线贯通的金属机箱其内部电路上的耦合干扰电压。分析了不同长度的贯通导线和不同强度的干扰电场对受害导线的影响。结果表明:穿出屏蔽机箱的导线越长,机箱内受害导线的干扰电压越大,并且在谐振频率处干扰电压产生峰值;受害导线的干扰电压随着干扰电磁场频率和强度的增大而增大。
郑春旭 +4 more
doaj
针对合智一体装置在电磁兼容试验中出现的若干问题,重点分析了电快速瞬变脉冲群、浪涌、静电放电等瞬态脉冲的特点。提出一种用于合智一体装置的抗电磁干扰措施,采用电容、磁珠、瞬态抑制二极管改进交流滤波回路、开关量输出回路、LED滤波回路,对干扰信号进行抑制。通过优化PCB布局布线,加强接地措施,减少各回路间相互耦合。试验结果证明,笔者总结出的合智一体装置硬件系统设计中采取的抑制电磁干扰的措施能有效地提高装置的抗电磁干扰能力。
徐丽青 +4 more
doaj

