이건 KIM, SEONG JUN ROH, YE EUN Lee, Sang-Hun Kim, Dai-Sik Kim, Sang Woo 서민아 2024-01-12T03:31:50Z 2024-01-12T03:31:50Z 2022-03-17 2022-04 https://pubs.kist.re.kr/handle/201004/76762 In the terahertz (THz) electromagnetic wave regime, which has recently received great attention in the fields of communication and security, shielding of THz waves is a significant issue. Therefore, carbon-based nanostructures or polymer-carbon nanocomposites have been widely explored. Herein, significantly enhanced THz shielding efficiency is reported for silver nanowires coated with reduced graphene oxide (rGO) and nanoscale THz metamaterials, as compared to the cases without nanoscale metamaterials. Using a nanoslot-patterned metamaterial with strong resonances at certain frequencies, THz transmission in intensity is enhanced up to three orders of magnitude. Enhanced transmission by nanopatterns substantially increases the shielding performance to the external THz waves, even for ultrathin films (several tens of nanometers) produced by a simple spray of rGO (a few nm of flakes) on a complex random nanowire network. Excellent shielding performance is presented and the shielding mechanism is investigated by the nanoprobing configuration at the same time. English CELL PRESS Effective terahertz shielding properties of extreme graphene-silver nanowire surfaces investigated by nanoprobing Article 10.1016/j.isci.2022.104033 1 iScience, v.25, no.4 iScience 25 4 Y scie scopus 000787750300006 Multidisciplinary Sciences Science & Technology - Other Topics Article