Stretchable,Transparent,and Ultra-Broadband Terahertz Shielding Thin Films Based on Wrinkled MXene ArchitecturesOACSTPCDEI
Stretchable,Transparent,and Ultra-Broadband Terahertz Shielding Thin Films Based on Wrinkled MXene Architectures
With the increasing demand for terahertz(THz)tech-nology in security inspection,medicalimaging,and flexible electron-ics,there is a significant need for stretchable and transparent THz electromagnetic interference(EMI)shielding materials.Existing EMI shielding materials,like opaque metals and carbon-based films,face challenges in achieving both high transparency and high shielding efficiency(SE).Here,a wrinkled structure strategy was proposed to construct ultra-thin,stretchable,and transparent terahertz shielding MXene films,which possesses both isotropous wrinkles(height about 50 nm)and periodic wrinkles(height about 500 nm).Compared to flat film,the wrinkled MXene film(8 nm)demonstrates a remarkable 36.5％increase in SE within the THz band.The wrinkled MXene film exhibits an EMI SE of 21.1 dB at the thickness of 100 nm,and an average EMI SE/t of 700 dB μm-1 over the 0.1-10 THz.Theoretical calculations suggest that the wrinkled structure enhances the film's conductivity and surface plasmon resonances,resulting in an improved THz wave absorption.Additionally,the wrinkled structure enhances the MXene films'stretchability and stability.After bending and stretching(at 30％strain)cycles,the average THz transmittance of the wrinkled film is only 0.5％and 2.4％,respectively.The outstanding performances of the wrinkled MXene film make it a promising THz electromagnetic shielding materials for future smart windows and wearable electronics.
Shaodian Yang;Hongjia Zhu;Yougen Hu;Enen Li;Huanjun Chen;Tianwu Wang;Shaozhi Deng;Xuchun Gui;Zhiqiang Lin;Ximiao Wang;Junhua Huang;Rongliang Yang;Zibo Chen;Yi Jia;Zhiping Zeng;Zhaolong Cao
State Key Laboratory of Optoelectronic Materials and Technologies,School of Electronics and Information Technology,Sun Yat-Sen University,Guangzhou 510275,People's Republic of ChinaState Key Laboratory of Optoelectronic Materials and Technologies,School of Electronics and Information Technology,Sun Yat-Sen University,Guangzhou 510275,People's Republic of China||Guangdong Province Key Laboratory of Display Material and Technology,Guangzhou 510275,People's Republic of ChinaNational Key Laboratory of Materials for Integrated Circuits,Shenzhen Institute of Advanced Electronic Materials,Shenzhen Institute of Advanced Technology,Chinese Academy of Sciences,Shenzhen 518055,People's Republic of ChinaGBA Branch of Aerospace Information Research Institute,Chinese Academy of Sciences,Guangzhou 510700,People's Republic of China||School of Electronic,Electrical and Communication Engineering,University of Chinese Academy of Sciences,Beijing 100049,People's Republic of China||Guangdong Provincial Key Laboratory of Terahertz Quantum Electromagnetics,Guangzhou 510700,People's Republic of ChinaChina Academy of Aerospace Science and Innovation,Beijing 100176,People's Republic of ChinaSchool of Materials Science and Engineering,Sun Yat-Sen University,Guangzhou 510275,People's Republic of China
TerahertzWrinkle structureElectromagnetic interference shieldingMXene
《纳微快报（英文）》 2024 (009)
110-122 / 13
This work was financially supported by the National Natural Science Foundation of China(Grant nos.52371247,91963205,62101352,61988102 and 12274424)and the National Key Research and Development Program of China(Grant nos.2019YFA0210200,2019YFA0210203,2022YFA1203500,and 2022YFA1206600).
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