论文标题
基于纸基板上的超薄ni/ag复合材料的高度柔韧性电磁干扰屏蔽膜
Highly flexible electromagnetic interference shielding films based on ultrathin Ni/Ag composites on paper substrates
论文作者
论文摘要
具有出色屏蔽性能的高度柔韧性电磁干扰（EMI）屏蔽材料对在下一代柔性设备中的实际应用具有重要意义。但是，大多数EMI材料的灵活性不足和复杂的制备方法。在这项研究中，我们提出了一种新方案，以在纸表面上制造磁性Ni粒子/Ag基质复合超薄膜。对于纸上的〜2微米厚膜，在半径约2毫米的半径上弯曲200,000次后，发现EMI屏蔽效率（SE）为46.2 dB。弯曲200,000次后，板电阻（RSQ）仍低于2.30欧姆。与RSQ的变化相反，膜的EMI通常随着AG与Ni的重量比增加而增加，这是根据EMI SE与电导率增加正相关的原理。理想的EMI屏蔽能力，超高灵活性和简单的处理为该材料提供了出色的应用前景。
Highly flexible electromagnetic interference (EMI) shielding material with excellent shielding performance is of great significance to practical applications in next-generation flexible devices. However, most EMI materials suffer from insufficient flexibility and complicated preparation methods. In this study, we propose a new scheme to fabricate a magnetic Ni particle/Ag matrix composite ultrathin film on a paper surface. For a ~2 micro meter thick film on paper, the EMI shielding effectiveness (SE) was found to be 46.2 dB at 8.1 GHz after bending 200,000 times over a radius of ~2 mm. The sheet resistance (Rsq) remained lower than 2.30 Ohm after bending 200,000 times. Contrary to the change in Rsq, the EMI SE of the film generally increased as the weight ratio of Ag to Ni increased, in accordance with the principle that EMI SE is positively related with an increase in electrical conductivity. Desirable EMI shielding ability, ultrahigh flexibility, and simple processing provide this material with excellent application prospects.
