| 초록 |
Nanoporous metals can provide unique optical and electrical functionalities arising from their unique nanoscale morphology, but typically require the use of toxic chemicals, high voltages, or an expensive vacuum apparatus. Here, we developed a simple sequential filtration and hot-pressing method to fabricate flexible and mechanically robust nanoporous Ag papers for electromagnetic interference (EMI) shielding application. The nanoporous Ag layer exhibited the maximum EMI shielding effectiveness of 68 dB at 12 GHz with minimum sheet resistance of 0.058 Ω/sq, which is higher than bulk Ag film of the same thickness. Thanks to their excellent electrical conductivity and internal nanoscale pore, nanoporous Ag papers showed not only reflection but also absorption originated from multiple internal reflections. |
