Studying Plasmon Dispersion of MXene for Enhanced Electromagnetic Absorption

Xiangdong Guo; Ning Li; Chenchen WuXiaokang DaiRuishi QiTianyu QiaoTuoyi SuDandan LeiNishuang LiuJinlong DuEnge WangXiaoxia YangPeng GaoQing Dai

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Studying Plasmon Dispersion of MXene for Enhanced Electromagnetic Absorption

机译：Studying Plasmon Dispersion of MXene for Enhanced Electromagnetic Absorption

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2D metal carbides and nitrides (MXene) are promising candidates for electromagnetic(EM) shielding, saturable absorption, thermal therapy, and photocatalysisowing to their excellent EM absorption. The plasmon resonances inmetallic MXene micro/nanostructures may play an important role in enhancingthe EM absorption; however, their contribution has not been determined dueto the lack of a precise understanding of its plasmon behavior. Here, the useof high-spatial-resolution electron energy-loss spectroscopy to measure theplasmon dispersion of MXene films with different thicknesses is reported,enabling accurate analysis of the EM absorption of complex MXene structuresin a wide frequency range via a theoretical model. The EM absorption of MXenecan be excited at the desired frequency by controlling the momentum (e.g., thesizes of the nanoflakes for EM excitation) as the strength can be enhanced byincreasing the layer number and the interlayer distance in MXene. For example,a 3 nm interlayer distance can nearly double the plasmon-enhanced EMabsorption in MXene nanostructures. These findings can guide the design ofadvanced ultrathin EM absorption materials for a broad range of applications.

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《Advanced Materials》 |2022年第33期|2201120.1-2201120.7|共7页
作者
Xiangdong Guo; Ning Li; Chenchen WuXiaokang DaiRuishi QiTianyu QiaoTuoyi SuDandan LeiNishuang LiuJinlong DuEnge WangXiaoxia YangPeng GaoQing Dai;
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CAS Key Laboratory of Nanophotonic Materials and DevicesCAS Key Laboratory of Standardization and Measurement forNanotechnologyCAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing 100190, China, Center of Materials;

Electron Microscopy LaboratorySchool of PhysicsPeking UniversityBeijing 100871, China;

School of PhysicsWuhan National Laboratory for Optoelectronics (WNLO)Huazhong University of Science and Technology (HUST)Wuhan 430074, P. R. ChinaInternational Center for Quantum MaterialsInterdisciplinary Institute of Light-Element Quantum Materialsand Research Center for Light-Element Advanced MaterialsCollaborative Innovation Center of Quantum MatterBeijing 100871, ChinaElectron Microscopy LaboratorySchool of PhysicsPeking UniversityBeijing 100871, China, International Center for Quantum MaterialsInterdisciplinary Institute of Light-Element Quantum Materialsand Research Center for Light-Element Advanced MaterialsCollabor;

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正文语种英语
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electromagnetic absorption; MXene; nanoflakes; plasmon dispersions;

Studying Plasmon Dispersion of MXene for Enhanced Electromagnetic Absorption

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