npj Flexible Electronics Pub Date : 2019-03-12 , DOI: 10.1038/s41528-019-0050-8 Sen Lin; Haiyang Wang; Fan Wu; Qingmin Wang; Xiaopeng Bai; Di Zu; Jianan Song; Dong Wang; Zhenglian Liu; Ziwei Li; Nian Tao; Kai Huang; Ming Lei; Bo Li; Hui Wu
A kind of pollution known as electromagnetic interference (EMI), which results from ubiquitous usage of various electronic communication and military radar equipment, has been receiving increasing attention recently. However, large-area EMI shielding on transparent and/or curved surfaces, including building windows, curved glass wall, and special requirements spaces (SRSs), remains hard to achieve. In this paper, a silver nanofiber (AgNF) based flexible and transparent EMI shielding film was successfully assembled via a room-temperature roll-to-roll production method. For transparent application scenario, AgNF with 89% transmittance in visible range and 1 μm thickness shows ~20 dB shielding efficiency (EMI SE). On the other hand, total shielding (>50 dB) is obtained when the thickness of AgNF increases to 10 μm, while its transmittance in visible range remains higher than 75%. Considering the facile and scale-free production technology, this material can be readily applied in large-scale, transparent, and/or SRSs EMI shielding.