Room temperature production of silver nanofiber film for large area, transparent and flexible surface electromagnetic interference shielding
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 mm 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 mm, 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.
npj Flexible Electronics