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3D Architectural MXene-based Composite Films for Stealth Terahertz Electromagnetic Interference Shielding Performance
Advanced Materials Interfaces ( IF 4.3 ) Pub Date : 2023-08-30 , DOI: 10.1002/admi.202300440 Vaskuri C. S. Theja 1 , Dani S. Assi 2 , Hongli Huang 2 , Raghad Saud Alsulami 2 , Bao Jie Chen 3 , Chi Hou Chan 3 , Chan‐Hung Shek 1 , Vaithinathan Karthikeyan 2 , Vellaisamy A. L. Roy 4
Advanced Materials Interfaces ( IF 4.3 ) Pub Date : 2023-08-30 , DOI: 10.1002/admi.202300440 Vaskuri C. S. Theja 1 , Dani S. Assi 2 , Hongli Huang 2 , Raghad Saud Alsulami 2 , Bao Jie Chen 3 , Chi Hou Chan 3 , Chan‐Hung Shek 1 , Vaithinathan Karthikeyan 2 , Vellaisamy A. L. Roy 4
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The terahertz frequency range is gaining popularity in security, stealth technology, and the future 6G network communication. For the control of severe terahertz electromagnetic interference (EMI) pollution, frequency-selective stealth-capable shielding materials are being explored to mask terahertz signals. For the realization of masking terahertz signals, the robustness, lightweight, and shape-conformable materials with excellent terahertz EMI shielding/absorption are crucial. Here, the study reports the fabrication of 3D symmetric pyramidal architectural MXene composite films with frequency-selective stealth performance characteristics via the facile drop casting method. With the high absorption capability of 2D MXene layers, the MXene composite films exhibit substantial terahertz stealth performance. 3D pyramidal microstructure design leads to frequency selective surface-assisted reflection resonance in the frequency range of 0.6–1.1 THz. The MXene composite film demonstrates an outstanding maximum terahertz shielding effectiveness (SE) of up to 70.4 dB and a specific SE of 0.55 dB µm−1. These terahertz SE values exceed all of those for MX-based shielding material designs reported in the literature. The investigation will open a new direction toward developing terahertz EMI shielding thin films with easy integration into any surface for stealth capabilities.
中文翻译：
具有隐形太赫兹电磁干扰屏蔽性能的 3D 结构 MXene 复合薄膜
太赫兹频率范围在安全、隐形技术和未来 6G 网络通信中越来越受欢迎。为了控制严重的太赫兹电磁干扰（EMI）污染，人们正在探索频率选择性隐形屏蔽材料来屏蔽太赫兹信号。为了实现太赫兹信号的屏蔽，具有优异太赫兹 EMI 屏蔽/吸收性能的坚固、轻质、形状一致的材料至关重要。在此，该研究报告了通过简单的滴铸方法制造了具有频率选择性隐形性能特征的 3D 对称金字塔结构 MXene 复合薄膜。凭借 2D MXene 层的高吸收能力，MXene 复合薄膜表现出显着的太赫兹隐形性能。3D 金字塔微观结构设计可在 0.6-1.1 THz 频率范围内产生频率选择性表面辅助反射共振。MXene复合薄膜表现出出色的最大太赫兹屏蔽效能（SE）高达70.4 dB，比SE为0.55 dB µm -1。这些太赫兹 SE 值超过了文献中报道的基于 MX 的屏蔽材料设计的所有值。这项研究将为开发太赫兹 EMI 屏蔽薄膜开辟新的方向，该薄膜可以轻松集成到任何表面以实现隐形功能。
更新日期：2023-08-30
中文翻译：
具有隐形太赫兹电磁干扰屏蔽性能的 3D 结构 MXene 复合薄膜
太赫兹频率范围在安全、隐形技术和未来 6G 网络通信中越来越受欢迎。为了控制严重的太赫兹电磁干扰（EMI）污染，人们正在探索频率选择性隐形屏蔽材料来屏蔽太赫兹信号。为了实现太赫兹信号的屏蔽，具有优异太赫兹 EMI 屏蔽/吸收性能的坚固、轻质、形状一致的材料至关重要。在此，该研究报告了通过简单的滴铸方法制造了具有频率选择性隐形性能特征的 3D 对称金字塔结构 MXene 复合薄膜。凭借 2D MXene 层的高吸收能力，MXene 复合薄膜表现出显着的太赫兹隐形性能。3D 金字塔微观结构设计可在 0.6-1.1 THz 频率范围内产生频率选择性表面辅助反射共振。MXene复合薄膜表现出出色的最大太赫兹屏蔽效能（SE）高达70.4 dB，比SE为0.55 dB µm -1。这些太赫兹 SE 值超过了文献中报道的基于 MX 的屏蔽材料设计的所有值。这项研究将为开发太赫兹 EMI 屏蔽薄膜开辟新的方向，该薄膜可以轻松集成到任何表面以实现隐形功能。
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