The investigation of absorption-led shielding mechanisms has now made practical progress as a result of the concept of green EM shielding. The extant studies primarily concentrate on the introduction of magnetic particles into the system, with the objective of enhancing the absorption rate (A) through dielectric-magnetic modulation for absorption-led electromagnetic shielding. In contrast, this paper presents a novel approach whereby PVA, glycerol, and MXene are combined into an organohydrogel (PMG) with oriented pores. This results in the creation of a non-magnetic medium that exhibits high absorption loss in multiple bands, thereby establishing a novel shielding system. The PMG20–3 organohydrogel (0.78 wt % MXene) has a shielding performance in the X-band of 42.34 dB (A/R = 1). In the terahertz band, the organic hydrogel gel exhibits an absorption rate of 99.9 %, a performance that exceeds that of the majority of previously reported systems. The PMG gel displays remarkable flexibility and strength, with a hysteresis return line that remains stable under 1000 compression cycles. Additionally, it offers versatile sensing capabilities and infrared stealth. The findings of this study offer novel insights that may facilitate the accelerated utilization of innovative multifunctional and environmentally conscious electromagnetic interference (EMI) shielding materials.

中文翻译：

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绿色 EMI 屏蔽新系统：具有多频段绿色电磁屏蔽、传感和红外隐身能力的有机水凝胶


由于绿色 EM 屏蔽的概念，对吸收主导的屏蔽机制的研究现在已经取得了实际进展。现有的研究主要集中在将磁性粒子引入系统中，目的是通过介电磁调制来提高吸收率 （A），以实现吸收主导的电磁屏蔽。相比之下，本文提出了一种新方法，其中 PVA、甘油和 MXene 结合成具有定向孔的有机氢凝胶 （PMG）。这导致产生了一种在多个频段中表现出高吸收损耗的非磁性介质，从而建立了一种新颖的屏蔽系统。PMG20–3 有机水凝胶 （0.78 wt % MXene） 在 X 波段的屏蔽性能为 42.34 dB （A/R = 1）。在太赫兹波段，有机水凝胶凝胶的吸收率为 99.9%，这一性能超过了以前报道的大多数系统。PMG 凝胶表现出卓越的柔韧性和强度，其磁滞回流线在 1000 次压缩循环下保持稳定。此外，它还提供多种传感功能和红外隐身功能。这项研究的结果提供了新的见解，可能有助于加速创新、多功能和环保电磁干扰 （EMI） 屏蔽材料的利用。