Anomalous Absorption of Electromagnetic Waves by 2D Transition Metal Carbonitride Ti3CNTx (MXene)
발표자
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초록
내용
Lightweight, ultrathin and flexible electromagnetic interference (EMI) shielding materials are highly needed to protect electronic circuits and portable telecommunication devices and eliminate cross-talk between devices and device components. Here, we show that a 2D transition metal carbonitride, Ti3CNTx MXene, with a moderate electrical conductivity provides a higher shielding effectiveness compared to more conductive Ti3C2Tx or metal foils of the same thickness. This exceptional shielding performance of Ti3CNTx was achieved by film annealing and is attributed to an anomalously high absorption of electromagnetic waves in the layered metamaterial-like structure. These results provide guidance for designing advanced EMI shielding materials, but also highlight the need for exploring fundamental mechanisms behind interaction of electromagnetic waves with 2D materials