Anomalous absorption of electromagnetic waves by 2D transition metal carbonitride Ti3CNTx(MXene)

Aamir Iqbal, Faisal Shahzad, Kanit Hantanasirisakul, Myung Ki Kim, Jisung Kwon, Junpyo Hong, Hyerim Kim, Daesin Kim, Yury Gogotsi, Chong Min Koo

Research output: Contribution to journalArticle

Abstract

Lightweight, ultrathin, and flexible electromagnetic interference (EMI) shielding materials are needed to protect electronic circuits and portable telecommunication devices and to eliminate cross-talk between devices and device components. Here, we show that a two-dimensional (2D) transition metal carbonitride, Ti3CNTxMXene, with a moderate electrical conductivity, provides a higher shielding effectiveness compared with more conductive Ti3C2Tx or metal foils of the same thickness. This exceptional shielding performance of Ti3CNTxwas achieved by thermal annealing and is attributed to an anomalously high absorption of electromagnetic waves in its 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.

Original languageEnglish
Pages (from-to)446-450
Number of pages5
JournalScience
Volume369
Issue number6502
DOIs
Publication statusPublished - 2020 Jul 24

ASJC Scopus subject areas

  • General

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    Iqbal, A., Shahzad, F., Hantanasirisakul, K., Kim, M. K., Kwon, J., Hong, J., Kim, H., Kim, D., Gogotsi, Y., & Koo, C. M. (2020). Anomalous absorption of electromagnetic waves by 2D transition metal carbonitride Ti3CNTx(MXene). Science, 369(6502), 446-450. https://doi.org/10.1126/science.aba7977