Jiang Chengming, Tan Dongchen, Li Qikun, Huang Jijie, Bu Jingyuan, Zang Lingyu, Ji Ruonan, Bi Sheng, Guo Qinglei
Key Laboratory for Precision and Non-Traditional Machining Technology of the Ministry of Education, Dalian University of Technology, Dalian 116024, China.
School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907, United States.
ACS Appl Mater Interfaces. 2021 Apr 7;13(13):15525-15535. doi: 10.1021/acsami.1c00590. Epub 2021 Mar 26.
The development of flexible and transparent electromagnetic interference (EMI) shielding materials with excellent comprehensive properties is urgently demanded as visual windows and display devices in aeronautic, industry, medical, and research facilities. However, the method of how to obtain highly efficient and reliable transparent EMI shielding devices is still facing lots of obstacles. Here, a high-performance silver nanotube (AgNT) network with stable and integrated interconnects is prepared by physical depositing technology, based on a uniform and large-scale nanofiber skeleton. This unique structure enables the AgNT network to achieve one order higher conductivity (∼1.0 Ω/sq at >90% transmittance) than previous research studies and keeps <10% variation with random deformations (>5000 times). Moreover, the manufactured AgNT shielding film with a thickness of less than 1 mm can be easily transferred to arbitrary surfaces as a transparent and flexible EMI shielding film at commercial ∼35 dB EMI shielding effectiveness, with large-scale, low-cost, and simple preparation processes. These excellent properties endow the AgNT shielding film to achieve great potential for future flexible and transparent scenarios.
在航空、工业、医疗和研究设施中，作为视觉窗口和显示设备，迫切需要开发具有优异综合性能的柔性透明电磁干扰（EMI）屏蔽材料。然而，如何获得高效且可靠的透明EMI屏蔽器件的方法仍面临诸多障碍。在此，基于均匀且大规模的纳米纤维骨架，通过物理沉积技术制备了具有稳定且集成互连的高性能银纳米管（AgNT）网络。这种独特结构使AgNT网络在大于90%透光率时电导率比先前研究高出一个数量级（约1.0 Ω/sq），并且在随机变形（>5000次）时变化小于10%。此外，制造的厚度小于1 mm的AgNT屏蔽膜可以轻松转移到任意表面，作为具有约35 dB商业EMI屏蔽效能的透明柔性EMI屏蔽膜，其具有大规模、低成本和简单的制备工艺。这些优异性能使AgNT屏蔽膜在未来柔性和透明场景中具有巨大潜力。
